Investigation Of Heavy Metal Pollution Caused By Fertilizer In Groundwater With A New Approach; Göksu Delta, Turkey

Yıl 2018, Cilt: 2 Sayı: 1, 18 - 27, 10.07.2018

Olcay Gülçiçek Zeynel abidin Demirel

Öz

Today the chemical fertilizers used in agricultural applications have
been an important factor pollution of environmental. Göksu Delta is an
important wetland where the Göksu River reaches to sea in the eastern of the
town Tasucu-Mersin. The delta is classified as a Wetland of International
Importance according to the Ramsar Convention. In this area, use of excessive
fertilizer effects the surface and groundwater quality negative. Because of the
Delta's geological structure, soil characteristics and climatic conditions,
groundwater quality is affected very easy from the surface activities. In the
agricultural activities intensively used fertilizers and pesticides contain not
only N and P compounds but also some heavy metals. This study aim is
investigation of heavy metal pollution sourced from fertilizers in groundwater
with a new approach. For this, the most widely used fertilizer in the area
(ammonium nitrate) and a groundwater samples were taken at three different time
periods and were analyzed (electrical conductivity (EC), salinity (Sal),
temperature(T), pH, iron (Fe), copper (Cu), chromium (Cr), manganese (Mn),
nickel (Ni), zinc (Zn), cadmium (Cd), lead (Pb)). The results were transferred
to Scholler semi-logarithmic diagram which is a new approach in identifying
pollutant sources to show the effect of fertilizer. In addition to, the results
were compared with the limit values in order to determinate the quality of
groundwater. Especially, samples that were taken in the rainy season
(1.Period), with the effect of infiltration were detected high heavy metal
concentrations. Analyzing the Scholler semi-logarithmic diagram results,
fertilizer (ammonium nitrate) has been determined to be effective to heavy
metal pollution in groundwater in different three periods. This diagram never
before has been used to determine pollutant sources. This study will be a guide
for estimating sources of soil and groundwater pollutant in agricultural areas.

Anahtar Kelimeler

Göksu Delta, Groundwater, Heavy Metal Pollution, Fertilizer, Schoeller SemiLogarithmic Diagram

Kaynakça

• Reference1 Nadim COPTY, Professor Bogazici University, Institue of environmental science [e-mail]
• Reference2 Aydeniz DEMİR DELİL,Asist.Prof. Mersin University, [e-mail]
• Reference3 Savaş,ŞENER,Prof. Mersin University, [e-mail]