摘要
取5克以上试样溶解后用1—2倍摩尔的草酸钾掩蔽铝,在4.5—6.0pH 值下 Cu^(2+)、Pb^(2+)、Cd^(2+)能被巯基棉定量吸附并与基体元素 Al^(3+)分离。然后用2mol/l 盐酸洗脱,在接收液中同时测定铜、镉、铅三种元素。
Interference of aluminium in the sample can be eliminated by adding tothe sample oxalate solution in as much a quantity as 1—2 times more in num-ber of moles than aluminium.The experimental results indicate that Cu^(2+),Pb^(2+)and Cd^(2+) can be quantitatively adsorbed by sulfhydryl ated cotton within the pHValue range of 4.5 to 6.0.After washing with 2mol/l hydrochloricacid,the threeelement can be determined simultaneously.
出处
《石油化工》
CAS
CSCD
北大核心
1989年第9期635-637,共3页
Petrochemical Technology
