微波消解原子吸收光谱法检测车间空气中的氧化锌

• 作 者: 李世杰 郑雯 付韬
• 机 构: 漯河市疾病预防控制中心,
• 出 处: 河南预防医学杂志
• 发表日期: 2016年07期
• 关键词: 微波消解 原子吸收光谱法 最佳仪器 车间空气 微波 检出限 微孔滤膜 加标 含量测定 消解液

目的建立微波消解原子吸收光谱法测定车间空气中氧化锌浓度的方法。方法采用微波消解前处理微孔滤膜,在最佳仪器条件下用原子吸收光谱法测定氧化锌含量。结果锌浓度在0~1.00 mg/L范围内时线性关系良好,r=0.998 9,相对标准偏差1.9%~2.6%,加标回收率为95.0%,最低检出限为0.025 mg/L,最低检出浓度为0.008 mg/m~3。结论该方法精密度和准确度可满足试验要求,适用于车间空气中氧化锌含量测定。

Objective To establish a method for the determination of zinc oxide in the air of workshop by microwave digestion and atomic absorption spectrometry. Methods Microporous membranes were pretreated with microwave digestion, and the content of zinc oxide was determined by atomic absorption spectrometry under the best instrument conditions. Results When the concentration of zinc was in the range of 0-1.00 mg / L, the linearity was good (r = 0.998 9, relative standard deviation 1.9% -2.6%), the recovery was 95.0% and the lowest detection limit was 0.025 mg / L The detected concentration was 0.008 mg / m ~ 3. Conclusion The precision and accuracy of this method can meet the test requirements and is suitable for the determination of zinc oxide in the air of workshop.