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| 微波消解-石墨炉原子吸收法测定滩涂中的铅和镉 | |
| 引用本文： | 龚文杰,许坚,吴建根,韩小江,徐毅. 微波消解-石墨炉原子吸收法测定滩涂中的铅和镉[J]. 中国卫生检验杂志, 2012, 0(3): 459-460,463 |
| 作者姓名： | 龚文杰 许坚 吴建根 韩小江 徐毅 |
| 作者单位： | 浙江省慈溪市疾病预防控制中心 |
| 基金项目： | 慈溪市科技计划项目(CN2010009) |
| 摘 要： | 目的:建立滩涂中铅和镉的微波消解-石墨炉原子吸收光谱测定方法。方法:以磷酸二氢铵-硝酸镁作基体改进剂,采用硝酸-氢氟酸进行微波消解,利用塞曼扣背景,石墨炉原子吸收法测定滩涂中的铅和镉含量。结果:铅和镉分别在2.0μg/L～50.0μg/L和0.2μg/L～5.0μg/L范围内具有良好的线性,相关系数大于0.999,加标回收率为90%～103%,RSD均小于5.0%。结论:建立的方法具有简便、灵敏、准确的特点,适合于高盐滩涂中铅镉的测定。 |
| 关 键 词： | 石墨炉原子吸收法 微波消解 滩涂 铅 镉 |
Determination of lead and cadmium in mudflat by GFAAS with microwave digestion |
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| GONG Wen-jie,XU Jian,WU Jian-gen,HAN Xiao-jiang,XU Yi. Determination of lead and cadmium in mudflat by GFAAS with microwave digestion[J]. Chinses Journal of Health Laboratory Technology, 2012, 0(3): 459-460,463 | |
| Authors: | GONG Wen-jie XU Jian WU Jian-gen HAN Xiao-jiang XU Yi |
| Affiliation: | (Cixi Center for Disease Control and Prevention,Cixi 315300,China) |
| Abstract: | Objective: To establish a method for determination of lead and cadmium in mudflat by graphite furnace atomic absorption spectrometry with microwave digestion.Methods: The mudflat samples were digested with HNO3-HF.The samples were analyzed by Zeeman GFAAS using NH4H2PO4–Mg(NO3)2 as matrix modifiers.Results: The linear range of the method were 2.0 μg/L~50.0 μg/ml for Pb,and 0.2 μg/L~5.0 μg/L for Cd with the correlation coefficients greater than 0.999.The recoveries were between 90%~103%,both RSDs were less than 5.0%.Conclusion: This method is simple,accurate and sensitive and suitable for determination of lead and cadmium in high salty mudflat. |
| Keywords: | GFAAS Microwave digestion Mudflat Lead Cadmium |
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