Nuannat Chanmekha. (2000) A continuous-flow sequential extraction with etaas detection for chemical speciation of arsenic in soil and sediment. Mahidol University,:ม.ป.ท.Nuannat Chanmekha. 2000. A continuous-flow sequential extraction with etaas detection for chemical speciation of arsenic in soil and sediment. ม.ป.ท.:Mahidol University,;Nuannat Chanmekha. A continuous-flow sequential extraction with etaas detection for chemical speciation of arsenic in soil and sediment. ม.ป.ท.:Mahidol University, 2000. Print.