摘要
本文系用二乙基二硫代氨基甲酸二乙铵(DEDTC)/甲基异丁基甲酮(MIBK)pH5.7萃取体系,预浓缩以后,用原子吸收法在RbCl、 CsCl、 Sr(NO_3)_2、H_3BO_3、NH_4NO_3、NaBr、KI、Li_2CO_3、NaCl、KCl、CaCl_2、MgO、BaCl_2、KH_2pO_4、KNaC_4H_4O_6、C_6H_6O_7等盐类中测定痕量的锰、铬、铜、锌、镉、铁、钴、镍、铅等九个元素,其中应用于前面七个样品是我们提出的。检出限为1×10^(-4)％,九个元素的回收率在93～106％之间,相对标准偏差(n=7)为2.7％。
The trace amount of Mn, Cr, Cu, Zn, Cd, Fe, Co, Ni and Pb in some salts, such as RbCl, CsCl, Sr(NO_3)_2, H_3BO_3, NH_4NO_3, NaBr, KI, Li_2CO_3, NaCl, KCI, CaCl_2, MgO, BaCl_2, KH_2PO_4, KNaC_4H_4O_6 and C_6H_8O_7has been determined by flame atomic absorption spectrometry, after preceding precontration of the trace elements using the extraction system of diethylammonium-N, N′-diethyldithiocarba-mate/MIBK at pH 5. 7. The large amount of Li, Rb, Cs etc does not interfere. The mean recovery and relative standard deviation are 93～106% and 2. 9%(n=7)respectively. The detection limit is 1×10^(-4)%
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1990年第1期61-64,共4页
Chinese Journal of Analytical Chemistry
关键词
AAS法
锂
锰
铬
铜
锌
Atomicabsorptionspectrometry
Lithium
Manganese
Chromium
Copper
Zinc
Cadmium
Iron
Cobalt
Nickel
Lead
