Sains Malaysiana 46(10)(2017): 1757–1762


The Comparative Evaluation of Carbon Mineralization in Soils Contaminated and Uncontaminated with Chromium

(Penilaian Bandingan terhadap Mineralisasi Karbon dalam Tanah yang Tercemar dan Tak Tercemar dengan Kromium)




1Central Research Laboratory, Çukurova University, 01330, Adana, Turkey


2Faculty of Science and Letters, Department of Biology, Osmaniye Korkut Ata University, 80000 Osmaniye, Turkey


3Faculty of Science and Letters, Department of Biology, Çukurova University, 01330, Adana,



Received: 10 December 2016/Accepted: 14 March 2017




The environmental risk of Chromium (Cr) pollution is pronounced in soils adjacent to chromate industry. It is important to investigate the functioning of soil microorganisms in ecosystems exposed to long-term contamination by Cr. The aim of this study was to determine the effects of Cr on carbon mineralization in soil. The study was carried out in soils contaminated and uncontaminated with Cr near and away from a Cr mine in three different districts (Bozluk, Kızılyüksek and Yanıkçam) of East Mediterranean Region, Turkey. Carbon mineralization were determined in soils humidified 80% of field capacity at 28°C over 30 days under the same laboratory conditions. These results showed that carbon mineralization was greatly inhibited by the presence of Cr in all contaminated sites. Based on these results, microbial activity can use as an indicator for the Cr pollution level in the soil ecosystems.


Keywords: Carbon mineralization; chromium; contamination; soil microorganisms; toxic effect



Risiko alam sekitar bagi pencemaran kromium (Cr) boleh dilihat pada tanah bersebelahan dengan industri kromat. Ia adalah penting untuk mengkaji kefungsian mikroorganisma tanah dalam ekosistem yang sudah terdedah kepada pencemaran jangka lama terhadap Cr. Tujuan kajian ini adalah untuk menentukan kesan Cr pada mineralisasi karbon dalam tanah. Kajian ini dijalankan pada tanah yang tercemar dan tidak tercemar dengan Cr yang berhampiran dan jauh dari lombong Cr di tiga daerah (Bozluk, Kızılyüksek dan Yanıkçam) di kawasan Mediterranean Timur, Turki. Pemineralan karbon ditentukan dalam tanah yang dilembapkan pada 80% had basah tanih pada suhu 28°C selama 30 hari pada keadaan makmal yang sama. Keputusan menunjukkan bahawa mineralisasi karbon sangat terencat dengan kehadiran Cr pada semua kawasan yang tercemar. Berdasarkan hasil ini, aktiviti mikrob boleh digunakan sebagai penunjuk tahap pencemaran Cr dalam ekosistem tanah.


Kata kunci: Kesan toksik; kromium; mikroorganisma tanah; pemineralan karbon; pencemaran


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