Nowadays, there is much attention on the utilization of herbal medicines among many parts of the world including Sokoto. However, there are concerns that the current trend in pollution could lead to an uptake of lead, cadmium and chromium by herbal plants and in turn can harm the consumers. Therefore, the objective of this paper was to assess cadmium, chromium, and lead in some herbal snuffs consumed in Sokoto, Nigeria and estimate human health risk. Standard methods and materials of analytical grade were used for this work. The assessed concentrations (p < 0.05) of Cd, Cr, and Pb in some common herbal snuffs consumed in Sokoto, Nigeria show ranges of Cd, Cr, and Pb respectively as follows: 0.07± 0.001 to 0.13 ± 0.005 ppm, 0.06 ± 0.001 to 0.13 ± 0.006 ppm, and 0.03 ± 0.001 to 0.11 ± 0.005 ppm respectively. Health risk assessment of these concentrations shows that all the values are below 1 and hence can only pose little or naught non-cancer/cancer risk to the consumers. However, people need to take caveat in consumption of herbal stuffs and agencies need to routinely check for quality of these stuffs to safeguard public health.
The authors have read, understood, and complied as applicable with the statement on "Ethical responsibilities of Authors" as found in the Instructions for Authors”.
Supporting Institution
No funding was received by the authors.
Thanks
The authors are grateful to the Management of Shehu Shagari University of Education Sokoto, and the Commissioner for Budget and Economic Planning Sokoto State, Dr. Abubakar Muhammad Zayyana for their support during carrying out this work.
References
Ajayi, A.A., Ngobidi, K.C., Ezem, S.N., Vining-Ogu I.C., Aja O.A. Danladi G.J. (2023) Potential Health Risk Assessment of Selected Heavy Metals, Nitrate and Nitrite, in Snuff Inhaled in Afikpo-North of Ebonyi State, Nigeria. African Journal of Environment and Natural Science Research 6(1), 43-50. DOI: 10.52589/AJENSR.
Al-Thani, G., Ibrahim, A.E., Alomairi, M., Salman, B.I., Hegazy, M.M., Al-Harrasi, A. El-Deeb, S. (2023. Toxic elemental impurities in herbal weight loss supplements; A study using ICP-OES microwave –assisted digestion. Toxics, 11(272) https://doi.org/10.3390/toxics11030272.
Balali-mood M, Naseri K, Tahergorabi Z, Khazdair MR. Sadeghi M, (2021. Toxic mechanisms of five heavy metals: Mercury, lead, chromium, cadmium, and arsenic. Frontiers of Pharmacology, 12-19. https://doi.org/10.3389/fphar.2021.643972
Balamurugan V, Fatima SMA. Velurajan S, (2019) A guide to phytochemical analysis. IJARIIE,5(1), 236-244. chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://ijariie.com/AdminUploadPdf/ A_GUIDE_TO_ PHYTOCHEMICAL_ANALYSIS_ijariie9430.pdf?srsltid=AfmBOooVjArKLRlYDFNs1lRXgqKq3zpAC_GybuCRG9Rl0WkekRNqHIWd
Benson NU, Snake WU, Adedapo AE, Fred-Ahmadu OH, Ayejuyo OO, (2017) Toxic metals in cigarettes and human health risk assessment associated with inhalation exposure. Environmental Monitoring Assessment, 189, 619-636. DOI: 10.1007/s10661-017-6348-x
Dahlawi S, Al Mulla AA, Saifullah, Salama K, Labib OA, Aljassim MT, Akhtar A, Asghar W, Faraj TK. Khalid N, (2021) Assessment of different heavy metals in cigarette filler and ash from multiple brands retailed in Saudi Arabia. J. King Saud Un.- Sci., 33(2021), 1-10. DOI: 10.1016/j.jksus.2021.101521
Duburska E, Sebesta M, Matulova M, Zveirina O. Orik M, (2022) Current strategies for selenium and iodine biofortification in crop plants. Nutrients, 14(94717), 1-20. https://doi.org/10.3390/nu14224717
Duruibe JO, Ogwuegbu MOC. Egwurugwu JN, (2007) Heavy metal pollution and Hunan biotoxic effects. International Journal of Physical Sciences, 2(5):112-118. https://www.scirp.org/(S(ny23rubfvg45z345vbrepxrl))/reference/referencespapers?referenceid=634133
Garba ZN, Babando AA. Galadima A, (2013. Trace metal content in different brands of cigarette sold in Samaru, Zaria. Elixir Pollut., 58(2013), 14667-14669. https://ejournal.uin-suka.ac.id/saintek/kaunia/article/view/3980
Hamza A, Gumi AM, Aliero AA, Umar A, Sarkingobir Y. Tambari U, (2023) Potential of Neem Leaves on Preservation of Selected Elemental Compositions in Two Tomato Cultivars from Sokoto, Nigeria. J. Biores. and Environ. Sci., 2(1),15-20. doi:10.14710/jbes.2022.17343.
Hashim TA, Abbas HH, Farid IM, El-Husseiny OHM, Abbas MHH, (2017) Accumulation of some heavy metals in plants and soils adjacent to Cairo-Alexandria highway. Egyptian Journal of Soil Science, 57(2), 215–232. 10.21608/ejss.2016.281.1047
Horowilz M, Hedrick C, Asch A, Fernandez S. Churchill K, (2023) The top foods to swap, substitute, shrink, or sneaking to reduce added sugars and solid fats in your diet. University of California. chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://ucanr.edu/sites/UC4-H/files/133648.pdf
Iwuoha GN, Oghu EI. Onwuachu UI, (2013) Levels of selected heavy metals in some brands of cigarette marketed in University of Port Harcourt, River state. Journal of applied Science and Environmental Management, 17(4), 561-564. chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/ https://www.bioline.org.br/pdf?ja13062
Labbo AM, Umar AI, Shehu S, Isah M. Ayuba SA, (2021. Heavy metals and Physicochemical Assessment of Some Selected Sachet Water Around Sokoto Metropolis, Nigeria. Caliphate Journal of Science and Technology (CajoST), 3 (1), 69 – 75) DOI: https://doi.org/10.4314/cajost.v3i1.67
Mafuyai GM, Ugbidye S. Ezekiel GI, (2020. Health risk assessment of heavy metals in consumption of vegetables irrigated with tin mine pond water in Jos-south, plateau state. European Journal of Environment and Earth Sciences, 1(5),1–11. https://doi.org/10.24018/EJGEO.2020.1.5.21
Mathew RM, Fleming JJ, Bondu JD. Jose A, (2021) Measurement of concentrations of six metals in Indian traditional medicine preparations and sindoor powder. Asia Pacific Journal of Medical Toxicology, 10(2), 61-64. https://doi.org/10.22038/apjmt.2021.18230
Muhammad BY, Barau SA, Zaruwa MZ, Mailefi R, (2021) Herbal snuff (AK-47 and HAB) induce oxidative stress and increase acetylcholinesterase enzyme activity in rat brain. GSC Biological and Pharmaceutical Sciences, 17(3), 171-176. https://gsconlinepress.com/journals/index.php/gscbps/article/ view/gscbps-2021-0355
Murphy T, Phan, K., Irvine, KN Lean D, (2021) The role of micronutrients and toxic metals in the management of epidemics in Cambodia. International Journal of Environment and Public Health, 18(11446), 1-25. Https://doi.org/10.3390/ijerph182111446.
Ndokiari B, Hol-ly B, Tamuno-Boma O. Julie C, (2021) Inhalation Bioacessibility of Potentially Toxic Metals in Tobacco Snuff and Related Exposure Risks. Journal of Environmental Protection. 12, 237-248. https://doi.org/10.4236/jep.2021.124015
Ngumah JC, Okere JN, Ezeji EU. Emeka-nwabunnia I, (2022) Heavy metal composition and phytochemical constituents of selected herbal remedies sold in open markets in Owerri metropolis. J. Pharm. Phytochem., 12(1), 287-291. https://doi.org/10.22271/phyto.2023.viz.idl.14587.
Njoga EO, Ezenduka EV, Ogbodo CG, Ogbonna CU, Jaja IF, Ofomatah AC. Okpala COR, (2021) Detection, distribution and health risk assessment of toxic heavy metals/ metalloids, arsenic, cadmium, and lead in goat carcasses processed for human consumption in southeastern Nigeria. Foods, 10(798), 1-17. doi: 10.3390/foods10040798.
Olagunju TE, Olagunju AO, Akawu IH. Ugokwe CU, (2020) Quantification and risk assessment of heavy metals in groundwater and soil of residential areas around Awotan landfill, Ibadan, Southwest- Nigeria. Journal of Toxicology and Risk Assessment, 6(1), 1-12. DOI: 10.23937/2572-4061.1510033
Owusu-Asante OJ, Mensah P, Duah-Gyamfi A, Owusu J, Minkah E, Wumbeidow H, Ibrahim S, Nyarko DE, (2022) Assessment of arsenic, cadmium, and laed in snuff in the Ashanti Region of Ghana. AJCE, 12(2), 41-59. https://www.ajol.info/index.php/ajce/article/view/229354
Prabahar AE, (2012. Heavy metals in smokeless tobacco detection. International Journal of Food and Nutritional Sci., 11(10), 2058-2064. https://directivepublications.org/journal-of-nutrition-and-food-science-research/aims-and-scope
Quds T, Ahmed M, Shakeel S, Jalbani N, Mazhar F. Azhar I, (2021) Determination of the heavy metal contents of frequently used herbal products in Pakistan. Tropical Journal of Pharmaceutical Research, 20(2), 377-382. https://www.tjpr.org/home/abstract.php?id=3143&aTitle=Determination%20 of%20the%20heavy%20metal%20contents%20of%20frequently%20used%20herbal%20products%20in%20Pakistan
Saeed M, Muhammad N, Khan H. Zakiullah I, (2011) Assessment of heavy metals content of branded Pakistani herbal products, 10(4), 499-506. https://doi.org/10.4314/tjpr.v10i4.16
Salifu A., Muktar AM, Yakubu S. (2023) Knowledge, attitude and prevalence of snuff use: A descriptive cross-sectional study among adults in Sagnerigu Municipality of the Northern Region of Ghana. UDS Journal of Development, 10(1), 160-171. https://udsijd.org/index.php/udsijd/article/view/786
Sarkingobir Y, Umar AI, Waheed SA, Miya YY, Livinus R,, Sahabi M. Salah NM, (2023) Heavy Metals Evaluated in Some Well-Water Obtained from Almajiri Schools in Sokoto East, Nigeria. J. Appl. Food & Nutrition, 4(1), 9-18. https://ejournal.upi.edu/index.php/JAFN/article/view/57387
Sarkingobir, Y., Hamza, A., Dikko, M., Abubakar, M., Yabo, A.G, Muhammad, B.I. (2022) Antibacterial study of guava leaves on some enteric bacteria (E. coli and Shigella dysentriae) from Sokoto, Nigeria. International Research Journal of Science, Technology, Education, and Management, 2(4), 1-7. https://doi.org/10.5281/zenodo.7136432.
Tschinkel PFS, Melo ESP, Pereira HS, Silva KRN, Arakaki DG, Lima NV, Fernandes MR, Leite LCS, Melo ESP, Melnikov P, Espindola PR, de Souza ID, Nascimento VA, Júnior JLR, Geronimo ACR, Dos Reis FJM, Nascimento VA, (2020. The hazards level of heavy metals in different medicinal plants and their concoctions in water: A public health problem in Brazil. Biomedical Research International, 1465051, 1-11. https://doi.org/10.1155/2020/1465051.
Tukur U, Umar AI, Dikko M, Sarkingobir Y. Zayyanu A, (2023. Assessment of Proximate and Phytochemical contents of Some Herbal Snuffs Sold in Sokoto Metropolis, Nigeria. Indonesian Chimica Letters, 2(1), 1-5.
Umar AI, Sarkingobir Y, Tambari U, Salau IA, Aliyu S. Gobir SS, (2023. Extent of cyanide, nitrate, and flavonoids goitrogens in Fadama soils and tobacco plant in Sokoto, Nigeria. GeoECo, 9(2), 148-159.
Ajayi, A.A., Ngobidi, K.C., Ezem, S.N., Vining-Ogu I.C., Aja O.A. Danladi G.J. (2023) Potential Health Risk Assessment of Selected Heavy Metals, Nitrate and Nitrite, in Snuff Inhaled in Afikpo-North of Ebonyi State, Nigeria. African Journal of Environment and Natural Science Research 6(1), 43-50. DOI: 10.52589/AJENSR.
Al-Thani, G., Ibrahim, A.E., Alomairi, M., Salman, B.I., Hegazy, M.M., Al-Harrasi, A. El-Deeb, S. (2023. Toxic elemental impurities in herbal weight loss supplements; A study using ICP-OES microwave –assisted digestion. Toxics, 11(272) https://doi.org/10.3390/toxics11030272.
Balali-mood M, Naseri K, Tahergorabi Z, Khazdair MR. Sadeghi M, (2021. Toxic mechanisms of five heavy metals: Mercury, lead, chromium, cadmium, and arsenic. Frontiers of Pharmacology, 12-19. https://doi.org/10.3389/fphar.2021.643972
Balamurugan V, Fatima SMA. Velurajan S, (2019) A guide to phytochemical analysis. IJARIIE,5(1), 236-244. chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://ijariie.com/AdminUploadPdf/ A_GUIDE_TO_ PHYTOCHEMICAL_ANALYSIS_ijariie9430.pdf?srsltid=AfmBOooVjArKLRlYDFNs1lRXgqKq3zpAC_GybuCRG9Rl0WkekRNqHIWd
Benson NU, Snake WU, Adedapo AE, Fred-Ahmadu OH, Ayejuyo OO, (2017) Toxic metals in cigarettes and human health risk assessment associated with inhalation exposure. Environmental Monitoring Assessment, 189, 619-636. DOI: 10.1007/s10661-017-6348-x
Dahlawi S, Al Mulla AA, Saifullah, Salama K, Labib OA, Aljassim MT, Akhtar A, Asghar W, Faraj TK. Khalid N, (2021) Assessment of different heavy metals in cigarette filler and ash from multiple brands retailed in Saudi Arabia. J. King Saud Un.- Sci., 33(2021), 1-10. DOI: 10.1016/j.jksus.2021.101521
Duburska E, Sebesta M, Matulova M, Zveirina O. Orik M, (2022) Current strategies for selenium and iodine biofortification in crop plants. Nutrients, 14(94717), 1-20. https://doi.org/10.3390/nu14224717
Duruibe JO, Ogwuegbu MOC. Egwurugwu JN, (2007) Heavy metal pollution and Hunan biotoxic effects. International Journal of Physical Sciences, 2(5):112-118. https://www.scirp.org/(S(ny23rubfvg45z345vbrepxrl))/reference/referencespapers?referenceid=634133
Garba ZN, Babando AA. Galadima A, (2013. Trace metal content in different brands of cigarette sold in Samaru, Zaria. Elixir Pollut., 58(2013), 14667-14669. https://ejournal.uin-suka.ac.id/saintek/kaunia/article/view/3980
Hamza A, Gumi AM, Aliero AA, Umar A, Sarkingobir Y. Tambari U, (2023) Potential of Neem Leaves on Preservation of Selected Elemental Compositions in Two Tomato Cultivars from Sokoto, Nigeria. J. Biores. and Environ. Sci., 2(1),15-20. doi:10.14710/jbes.2022.17343.
Hashim TA, Abbas HH, Farid IM, El-Husseiny OHM, Abbas MHH, (2017) Accumulation of some heavy metals in plants and soils adjacent to Cairo-Alexandria highway. Egyptian Journal of Soil Science, 57(2), 215–232. 10.21608/ejss.2016.281.1047
Horowilz M, Hedrick C, Asch A, Fernandez S. Churchill K, (2023) The top foods to swap, substitute, shrink, or sneaking to reduce added sugars and solid fats in your diet. University of California. chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://ucanr.edu/sites/UC4-H/files/133648.pdf
Iwuoha GN, Oghu EI. Onwuachu UI, (2013) Levels of selected heavy metals in some brands of cigarette marketed in University of Port Harcourt, River state. Journal of applied Science and Environmental Management, 17(4), 561-564. chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/ https://www.bioline.org.br/pdf?ja13062
Labbo AM, Umar AI, Shehu S, Isah M. Ayuba SA, (2021. Heavy metals and Physicochemical Assessment of Some Selected Sachet Water Around Sokoto Metropolis, Nigeria. Caliphate Journal of Science and Technology (CajoST), 3 (1), 69 – 75) DOI: https://doi.org/10.4314/cajost.v3i1.67
Mafuyai GM, Ugbidye S. Ezekiel GI, (2020. Health risk assessment of heavy metals in consumption of vegetables irrigated with tin mine pond water in Jos-south, plateau state. European Journal of Environment and Earth Sciences, 1(5),1–11. https://doi.org/10.24018/EJGEO.2020.1.5.21
Mathew RM, Fleming JJ, Bondu JD. Jose A, (2021) Measurement of concentrations of six metals in Indian traditional medicine preparations and sindoor powder. Asia Pacific Journal of Medical Toxicology, 10(2), 61-64. https://doi.org/10.22038/apjmt.2021.18230
Muhammad BY, Barau SA, Zaruwa MZ, Mailefi R, (2021) Herbal snuff (AK-47 and HAB) induce oxidative stress and increase acetylcholinesterase enzyme activity in rat brain. GSC Biological and Pharmaceutical Sciences, 17(3), 171-176. https://gsconlinepress.com/journals/index.php/gscbps/article/ view/gscbps-2021-0355
Murphy T, Phan, K., Irvine, KN Lean D, (2021) The role of micronutrients and toxic metals in the management of epidemics in Cambodia. International Journal of Environment and Public Health, 18(11446), 1-25. Https://doi.org/10.3390/ijerph182111446.
Ndokiari B, Hol-ly B, Tamuno-Boma O. Julie C, (2021) Inhalation Bioacessibility of Potentially Toxic Metals in Tobacco Snuff and Related Exposure Risks. Journal of Environmental Protection. 12, 237-248. https://doi.org/10.4236/jep.2021.124015
Ngumah JC, Okere JN, Ezeji EU. Emeka-nwabunnia I, (2022) Heavy metal composition and phytochemical constituents of selected herbal remedies sold in open markets in Owerri metropolis. J. Pharm. Phytochem., 12(1), 287-291. https://doi.org/10.22271/phyto.2023.viz.idl.14587.
Njoga EO, Ezenduka EV, Ogbodo CG, Ogbonna CU, Jaja IF, Ofomatah AC. Okpala COR, (2021) Detection, distribution and health risk assessment of toxic heavy metals/ metalloids, arsenic, cadmium, and lead in goat carcasses processed for human consumption in southeastern Nigeria. Foods, 10(798), 1-17. doi: 10.3390/foods10040798.
Olagunju TE, Olagunju AO, Akawu IH. Ugokwe CU, (2020) Quantification and risk assessment of heavy metals in groundwater and soil of residential areas around Awotan landfill, Ibadan, Southwest- Nigeria. Journal of Toxicology and Risk Assessment, 6(1), 1-12. DOI: 10.23937/2572-4061.1510033
Owusu-Asante OJ, Mensah P, Duah-Gyamfi A, Owusu J, Minkah E, Wumbeidow H, Ibrahim S, Nyarko DE, (2022) Assessment of arsenic, cadmium, and laed in snuff in the Ashanti Region of Ghana. AJCE, 12(2), 41-59. https://www.ajol.info/index.php/ajce/article/view/229354
Prabahar AE, (2012. Heavy metals in smokeless tobacco detection. International Journal of Food and Nutritional Sci., 11(10), 2058-2064. https://directivepublications.org/journal-of-nutrition-and-food-science-research/aims-and-scope
Quds T, Ahmed M, Shakeel S, Jalbani N, Mazhar F. Azhar I, (2021) Determination of the heavy metal contents of frequently used herbal products in Pakistan. Tropical Journal of Pharmaceutical Research, 20(2), 377-382. https://www.tjpr.org/home/abstract.php?id=3143&aTitle=Determination%20 of%20the%20heavy%20metal%20contents%20of%20frequently%20used%20herbal%20products%20in%20Pakistan
Saeed M, Muhammad N, Khan H. Zakiullah I, (2011) Assessment of heavy metals content of branded Pakistani herbal products, 10(4), 499-506. https://doi.org/10.4314/tjpr.v10i4.16
Salifu A., Muktar AM, Yakubu S. (2023) Knowledge, attitude and prevalence of snuff use: A descriptive cross-sectional study among adults in Sagnerigu Municipality of the Northern Region of Ghana. UDS Journal of Development, 10(1), 160-171. https://udsijd.org/index.php/udsijd/article/view/786
Sarkingobir Y, Umar AI, Waheed SA, Miya YY, Livinus R,, Sahabi M. Salah NM, (2023) Heavy Metals Evaluated in Some Well-Water Obtained from Almajiri Schools in Sokoto East, Nigeria. J. Appl. Food & Nutrition, 4(1), 9-18. https://ejournal.upi.edu/index.php/JAFN/article/view/57387
Sarkingobir, Y., Hamza, A., Dikko, M., Abubakar, M., Yabo, A.G, Muhammad, B.I. (2022) Antibacterial study of guava leaves on some enteric bacteria (E. coli and Shigella dysentriae) from Sokoto, Nigeria. International Research Journal of Science, Technology, Education, and Management, 2(4), 1-7. https://doi.org/10.5281/zenodo.7136432.
Tschinkel PFS, Melo ESP, Pereira HS, Silva KRN, Arakaki DG, Lima NV, Fernandes MR, Leite LCS, Melo ESP, Melnikov P, Espindola PR, de Souza ID, Nascimento VA, Júnior JLR, Geronimo ACR, Dos Reis FJM, Nascimento VA, (2020. The hazards level of heavy metals in different medicinal plants and their concoctions in water: A public health problem in Brazil. Biomedical Research International, 1465051, 1-11. https://doi.org/10.1155/2020/1465051.
Tukur U, Umar AI, Dikko M, Sarkingobir Y. Zayyanu A, (2023. Assessment of Proximate and Phytochemical contents of Some Herbal Snuffs Sold in Sokoto Metropolis, Nigeria. Indonesian Chimica Letters, 2(1), 1-5.
Umar AI, Sarkingobir Y, Tambari U, Salau IA, Aliyu S. Gobir SS, (2023. Extent of cyanide, nitrate, and flavonoids goitrogens in Fadama soils and tobacco plant in Sokoto, Nigeria. GeoECo, 9(2), 148-159.
Sarkingobir, Y., & Miya, Y. Y. (n.d.). Human Health Risk Prospecting Against Lead, Chromium, and Cadmium in Consumed Herbal Snuffs in Sokoto State, Nigeria. Journal of International Environmental Application and Science, 19(4), 166-173.
AMA
Sarkingobir Y, Miya YY. Human Health Risk Prospecting Against Lead, Chromium, and Cadmium in Consumed Herbal Snuffs in Sokoto State, Nigeria. J. Int. Environmental Application & Science. 19(4):166-173.
Chicago
Sarkingobir, Yusuf, and Yusuf Yahaya Miya. “Human Health Risk Prospecting Against Lead, Chromium, and Cadmium in Consumed Herbal Snuffs in Sokoto State, Nigeria”. Journal of International Environmental Application and Science 19, no. 4 n.d.: 166-73.
EndNote
Sarkingobir Y, Miya YY Human Health Risk Prospecting Against Lead, Chromium, and Cadmium in Consumed Herbal Snuffs in Sokoto State, Nigeria. Journal of International Environmental Application and Science 19 4 166–173.
IEEE
Y. Sarkingobir and Y. Y. Miya, “Human Health Risk Prospecting Against Lead, Chromium, and Cadmium in Consumed Herbal Snuffs in Sokoto State, Nigeria”, J. Int. Environmental Application & Science, vol. 19, no. 4, pp. 166–173.
ISNAD
Sarkingobir, Yusuf - Miya, Yusuf Yahaya. “Human Health Risk Prospecting Against Lead, Chromium, and Cadmium in Consumed Herbal Snuffs in Sokoto State, Nigeria”. Journal of International Environmental Application and Science 19/4 (n.d.), 166-173.
JAMA
Sarkingobir Y, Miya YY. Human Health Risk Prospecting Against Lead, Chromium, and Cadmium in Consumed Herbal Snuffs in Sokoto State, Nigeria. J. Int. Environmental Application & Science.;19:166–173.
MLA
Sarkingobir, Yusuf and Yusuf Yahaya Miya. “Human Health Risk Prospecting Against Lead, Chromium, and Cadmium in Consumed Herbal Snuffs in Sokoto State, Nigeria”. Journal of International Environmental Application and Science, vol. 19, no. 4, pp. 166-73.
Vancouver
Sarkingobir Y, Miya YY. Human Health Risk Prospecting Against Lead, Chromium, and Cadmium in Consumed Herbal Snuffs in Sokoto State, Nigeria. J. Int. Environmental Application & Science. 19(4):166-73.