摘要
以碳酸钙共沉淀卤水中的痕量Cu、Pb、Zn，用火焰原子吸收光谱法测定。对试剂的加入量、富集时间、酸度等影响因素进行了实验，选择了最佳的共沉淀条件。方法已用于卤水分析，加标回收率为Cu94．0％～97．6％、Pb94．0％。102％、Zn93．4％-102％。对卤水样品6次测定的相对标准偏差为Cu0．49％、Pb0．79％、Zn1．85％。
Trace copper, lead and zinc in brines were determined by flame atomic absorption spectrometry after separation and preconcentration by co-precipitation with calcium carbonate. Some parameters influencing the co-precipitation separation, including amounts of agents used, enrichment time and acidity are optimized. The precision （RSD, n = 6） are 0.49% for copper, 0.79% for lead and 1.85% for zinc. The recoveries of the method are 94.0% -97.6% for copper, 94.0% - 102% for lead and 93.4%- 102% for zinc. The method has been applied to the determination of Cu, Pb and Zn in brine samples with satisfactory results.
出处
《岩矿测试》
CAS
CSCD
2006年第1期89-90,共2页
Rock and Mineral Analysis
关键词
共沉淀
火焰原子吸收光谱法
卤水
铜
铅
辞
co-precipitation
flame atomic absorption spectrometry（FAAS）
brine
copper
lead
zinc
