摘要
目的:建立测定大青盐中钾、钙和镁含量的方法。方法:采用标准加入法,用火焰原子吸收光谱法测定大青盐中微量钾、钙和镁的含量。结果:钾、镁的进样浓度均在0.4～10.0mg.L-1,钙在0.4～30.0mg.L-1范围内遵循朗伯比尔定律;钾、钙、镁的平均加样回收率分别为109.6%、101.8%、94.7%,RSD分别为2.43%、2.81%、5.00%(n均为9)。结论:该方法专属性强、简便易行、灵敏度高,可用于矿物药大青盐中微量钾、钙和镁的限量控制。
OBJECTIVE：To establish the method for the content determination of potassium,calcium and magnesium in halitum.METHODS：By using standard join method,the contents of potassium,calcium and magnesium in halitum were determined by flame atomic absorption spectrometry.RESULTS：The results showed that Beer＇s law was kept in the range of 0.4～10.0 mg·L-1 for potassium and magnesium and 0.4～30.0 mg·L-1 for calcium under certain conditions.Average recoveries were 109.6%（RSD=2.43%,n=9）,101.8%（RSD=2.81%,n=9） and 94.7%（RSD=5.00%,n=9）.CONCLUSION：The method is specific,simple and sensitive.It can be used for the limit control of potassium,calcium and magnesium in halitum.
出处
《中国药房》
CAS
CSCD
2012年第15期1389-1391,共3页
China Pharmacy
基金
"十一五"国家科技支撑计划项目子课题(2006BAI55B02-09)
关键词
大青盐
钾
钙
镁
火焰原子吸收光谱法
含量测定
Halitum
Potassium
Calcium
Magnesium
Atomic absorption spectrometry
Content determination
