| 磷酸氢铈纳米吸附剂预富集-火焰原子吸收法测定水中痕量铅 |
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| 引用本文： | 刘正丹,徐云斌,曹美龄,徐立,孙芳,胡迅. 磷酸氢铈纳米吸附剂预富集-火焰原子吸收法测定水中痕量铅[J]. 现代预防医学, 2016, 0(3): 530-533 |
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| 作者姓名： | 刘正丹 徐云斌 曹美龄 徐立 孙芳 胡迅 |
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| 作者单位： | 武汉市疾病预防控制中心环境健康与食品安全所，湖北 武汉 430015 |
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| 摘 要： | 摘要:目的 建立磷酸氢铈（CeP）一维纳米吸附剂预富集-火焰原子吸收法测定水体中痕量铅的新方法。方法 用10 mg CeP 对pH为2～9的200 ml水样中的Pb2+吸附富集30 min，抽滤后再用4.00 ml 2 mol/L的硝酸溶液解吸60 min，用火焰原子吸收法测定解吸液中的Pb2+。结果 该方法测定Pb2+的线性范围为10～400 μg/L，回归方程为y＝0.0011x + 0.0043，线性相关系数r＞0.999，检出限为1.14 μg/L，相对标准偏差为1.12%（n＝9，80 μg/L），加标回收率为99.8%～107.5%。结论 本方法线性范围宽，灵敏度高，准确度和精密度良好，操作条件简单，测定成本低，可应用于环境水样中痕量铅的测定。
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| 关 键 词： | 关键词:吸附剂 磷酸氢铈 火焰原子吸收法 水 铅 |
Flame atomic absorption spectrometric determination of trace lead in water after preconcentration with nano cerium hydrogen phosphate |
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| LIU Zheng-dan,XU Yun-bin,CAO Mei-ling,XU Li,SUN Fang,HU Xun. Flame atomic absorption spectrometric determination of trace lead in water after preconcentration with nano cerium hydrogen phosphate[J]. Modern Preventive Medicine, 2016, 0(3): 530-533 |
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| Authors: | LIU Zheng-dan XU Yun-bin CAO Mei-ling XU Li SUN Fang HU Xun |
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| Affiliation: | Wuhan Center for Disease Prevention and Control, Wuhan, Hubei 430015, China |
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| Abstract: | Abstract: Objective To establish a method for the determination of trace lead in environmental water by CeP preconcentration combined with flame atomic absorption spectrometry. Methods 10 mg CeP was used to adsorb Pb2+ for 30 min in 200mL water sample, with the pH range of 2 to 9. Then Pb2+ adsorbed on CeP was desorbed by 2 mol/L nitric acid for 60 min and detected by FAAS. Results The limit of detection for Pb2+ was 1.14 μg/L. The linear range of the determination was 10 ~ 400 μg/L with a correlation coefficient greater than 0.999. The precision was 1.12% (n = 9, 80 μg/L), and the recovery rates were 99.8% ~ 107.5%. Conclusion The method is selective, sensitive, accurate, reliable and feasible for the determination of trace lead in environmental water samples. |
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| Keywords: | Keywords: Adsorbent Cerium Hydrogen Phosphate Flame Atomic Absorption Spectrometry Water Lead |
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