Geochemical assessment of metal concentrations in sediment core of Korangi Creek along Karachi Coast, Pakistan

被引:32
作者
Chaudhary, M. Z. [1 ]
Ahmad, N. [2 ,3 ]
Mashiatullah, A. [1 ]
Ahmad, N. [2 ,3 ]
Ghaffar, A. [1 ]
机构
[1] PINSTECH Islamabad, Isotope Applicat Div, Isotope Geochem Lab, Islamabad, Pakistan
[2] Univ Punjab, Inst Geol, Lahore, Pakistan
[3] Govt Coll Univ, CASP, Accelerator Lab, Lahore, Pakistan
关键词
Metals; Sediments; Korangi; Enrichment; Pollution; Toxicology; SURFACE SEDIMENTS; HEAVY-METALS; POLLUTION; ESTUARY; BAY; ACCUMULATION; ELEMENTS; SEA;
D O I
10.1007/s10661-012-3056-4
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Sediment core from Korangi Creek, one of the polluted coastal locations along the Karachi Coast Pakistan, was collected to trace the history of marine pollution and to determine the impact of industrial activity in the area. Down core variation of metals such as Ca, K, Mg, Al, S, Ti, V, Cr, Mn, Fe, Ni, Cu and Zn was studied in the 72.0 cm core. Nuclear analytical techniques, proton induced X-rays emission (PIXE), was employed to ascertain the chemical composition in sediment core. Grain size analysis and sediment composition of cored samples indicated that Korangi creek sediments are clayey in nature. Correlation matrix revealed a strong association of Ni, Cu, Cr and Zn with Fe and Mn. To infer anthropogenic input, enrichment factor (EF), degree of contamination and pollution load index were calculated. EF showed severe enrichment in surface sediment for Ni, Cu, Cr and Zn, indicating increased industrial effluents discharge in recent years. The study suggests that heavy metal discharge in the area should be regulated. If the present trend of enrichment is allowed to continue unabated, it is most likely that the local food web complexes in the creek might be at highest risk.
引用
收藏
页码:6677 / 6691
页数:15
相关论文
共 44 条
[1]  
Ahmad N., 2010, INT J PIXE, V20, P101
[2]  
Alemdaroglu T., 2003, International Journal Environmental Studies, V60, P287, DOI DOI 10.1080/00207230290028915
[3]  
[Anonymous], 2003, WOLLONGONG U PAPERS
[4]  
[Anonymous], 2005, J ENV HLTH SCI ENG
[5]   Metal pollution records in core sediments of some Red Sea coastal areas, Kingdom of Saudi Arabia [J].
Badr, Nadia B. E. ;
El-Fiky, Anwar A. ;
Mostafa, Alaa R. ;
Al-Mur, Bandr A. .
ENVIRONMENTAL MONITORING AND ASSESSMENT, 2009, 155 (1-4) :509-526
[6]  
Cardoso AGA, 2001, J BRAZIL CHEM SOC, V12, P767
[7]   Distribution and accumulation of heavy metals in the sediments of Kaohsiung Harbor, Taiwan [J].
Chen, Chiu-Wen ;
Kao, Chih-Ming ;
Chen, Chih-Feng ;
Dong, Cheng-Di .
CHEMOSPHERE, 2007, 66 (08) :1431-1440
[8]  
Chen W, 1996, WATER AIR SOIL POLL, V92, P273
[9]   Assessment of metal and nutrient concentrations in river water and sediment collected from the cities in the Pearl River Delta, South China [J].
Cheung, KC ;
Poon, BHT ;
Lan, CY ;
Wong, MH .
CHEMOSPHERE, 2003, 52 (09) :1431-1440
[10]  
Cohen A. S., 2003, PALIOLIMNOLOGY