This study was conducted to estimate contents of heavy metals in sediments and to provide a standardization for heavy metals analysis in sediment of Korea. The contents of lead (Pb), zinc (Zn), copper (Cu) and cadmium (Cd) were determined in reference materials (PACS-2, SRM 2711) and real sediments ...
This study was conducted to estimate contents of heavy metals in sediments and to provide a standardization for heavy metals analysis in sediment of Korea. The contents of lead (Pb), zinc (Zn), copper (Cu) and cadmium (Cd) were determined in reference materials (PACS-2, SRM 2711) and real sediments (Gupo) using a Inductively Coupled Plasma Spectrophotometer (ICP-AES/MS). Reference materials tested were PACS-2 and SRM 2711 purchased from National Research Council of Canada (NRCC) and National Institute of Standards and Technology of USA (NIST), respectively. Extraction efficiency of heavy metals was verified by EPA method 3050B, EPA method 3051A (HNO3), EPA method 3051A (HNO3, HCl)) and standard method for Maritime Environment (HNO3, HClO4, HF).
The recovery (filtration, centrifugation) of extracted heavy metals in reference materials was as follows: in case of average recovery of Pb, Zn, Cu and Cd in filtrated solution was 3050B method (31~86%), 3051A (HNO3) method (28~89%), 3051A (HNO3, HCl) mthod (66~87%) and standard method for Maritime Environment (28~89%). Average recovery of Pb, Zn, Cu and Cd in centrifuged solution being 3051A (HNO3) method (65~124%), 3051A (HNO3, HCl) method (71~122%) and standard method for Maritime Environment (88~119%). The heavy metals extraction method of optimum was standard method for Maritime Environment using centrifugation.
The optimization experiments of standard method for Maritime Environment were estimated to use by filtration, acid washing filtration and centrifugation. After extraction using standard method for Maritime Environment, residual sediment of very small amount was whole digestion. Average recovery of heavy metals in filtrated solution was 87% for Pb, 84% for Zn, 83% for Cu, 118% for Cd and 101% for As. Average recovery of heavy metals in acid washing filtrated solution was 91% for Pb, 83% for Zn, 84% for Cu, 121% for Cd and 100% for As. Average recovery of heavy metals in centrifuged filtrated solution was 88% for Pb, 84% for Zn, 89% for Cu, 119% for Cd and 100% for As. The heavy metals extraction method of optimum was centrifugation and whole digestion of residual sediment used by standard method for Maritime Environment. It is thought that this results could be utilized the important reference to establish the standard of heavy metals in sediments.
This study was conducted to estimate contents of heavy metals in sediments and to provide a standardization for heavy metals analysis in sediment of Korea. The contents of lead (Pb), zinc (Zn), copper (Cu) and cadmium (Cd) were determined in reference materials (PACS-2, SRM 2711) and real sediments (Gupo) using a Inductively Coupled Plasma Spectrophotometer (ICP-AES/MS). Reference materials tested were PACS-2 and SRM 2711 purchased from National Research Council of Canada (NRCC) and National Institute of Standards and Technology of USA (NIST), respectively. Extraction efficiency of heavy metals was verified by EPA method 3050B, EPA method 3051A (HNO3), EPA method 3051A (HNO3, HCl)) and standard method for Maritime Environment (HNO3, HClO4, HF).
The recovery (filtration, centrifugation) of extracted heavy metals in reference materials was as follows: in case of average recovery of Pb, Zn, Cu and Cd in filtrated solution was 3050B method (31~86%), 3051A (HNO3) method (28~89%), 3051A (HNO3, HCl) mthod (66~87%) and standard method for Maritime Environment (28~89%). Average recovery of Pb, Zn, Cu and Cd in centrifuged solution being 3051A (HNO3) method (65~124%), 3051A (HNO3, HCl) method (71~122%) and standard method for Maritime Environment (88~119%). The heavy metals extraction method of optimum was standard method for Maritime Environment using centrifugation.
The optimization experiments of standard method for Maritime Environment were estimated to use by filtration, acid washing filtration and centrifugation. After extraction using standard method for Maritime Environment, residual sediment of very small amount was whole digestion. Average recovery of heavy metals in filtrated solution was 87% for Pb, 84% for Zn, 83% for Cu, 118% for Cd and 101% for As. Average recovery of heavy metals in acid washing filtrated solution was 91% for Pb, 83% for Zn, 84% for Cu, 121% for Cd and 100% for As. Average recovery of heavy metals in centrifuged filtrated solution was 88% for Pb, 84% for Zn, 89% for Cu, 119% for Cd and 100% for As. The heavy metals extraction method of optimum was centrifugation and whole digestion of residual sediment used by standard method for Maritime Environment. It is thought that this results could be utilized the important reference to establish the standard of heavy metals in sediments.
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