1[1]Kulp T R,Pratt L M.Speciation and weathering of selenium in Upper Cretaceous chalk and shale from South Dakota and Wyoming,USA[J].Geochimica et Cosmochimica Acta,2004,68(18):3687 -3701.
6Dumont E, Vanhaecke F, Cornelis R. Selenium speciation from food source to metabolites: a critical review[J]. Anal Bioanal Chem, 2006, 386: 1304-- 1323.
7Frankanberger W T, Benson S. Selenium in the environment[M]. Marcel Dekker, Inc, New York, 1994: 1--416.
8Cappuyns V, Swennen R, Niclaes M. Application of the BCR sequential extraction scheme to dredged pond sediments contaminated by Pb-Zn mining.. A combined geochemical and mineralogical approach[J]. J Geochem explor, 2007, 93: 78--90.
9Kheboian C, Bauer C F. Accutracy of selective extraction procedures for metal speciation in model aquatic sediments[J]. Anal Chem, 1987, 59:1417--1423.
10Cutter G A. Determination of selenium speciation in biogenie particles and sediments[J]. Anal Chem, 1985, 57: 2951-- 2955.