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Chemiluminescence System with Air Pump as a Sensor for Determination of Metal Levels in Rain

机译:化学发光系统,以气泵为传感器,用于测定雨中的金属含量

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A lab-made chemiluminescence system with air pump was developed for monitoring of some metal levels in rain. The air pump enabled injection of 17.7 レg samples into a glass cell filled with luminol-H2O2 reagent of typically 300 レL for chemiluminescence measurement. The monitored trend of total metal ions in the rain collected in our campus was compared with analytical results of each metal ion from GFAAS. The system was also demonstrated to determine Cr6+ by reduction to Cr3+ using SnCl2. The limit of detection for Cr6+ obtained by 4 measurements was 85.0 pg mL-1 with a relative standard deviation of 3.4%. Although this system doesn’t have selectivity due to the characteristics of chemiluminescence, application of it to environmental monitoring as a sensor for some transition metal ions was demonstrated.
机译:开发了带有空气泵的实验室化学发光系统,用于监测雨中的某些金属水平。空气泵可将17.7微克样品注入装有通常为300微升的鲁米诺-H 2 O 2 试剂的玻璃池中,用于化学发光测量。将我校校园雨水中监测到的总金属离子趋势与来自GFAAS的每种金属离子的分析结果进行了比较。该系统还被证明可以通过使用SnCl 2 还原为Cr 3 + 来测定Cr 6 + 。通过4次测量获得的Cr 6 + 的检出限为85.0 pg mL -1 ,相对标准偏差为3.4%。尽管该系统由于化学发光的特性而没有选择性,但已证明将其作为某些过渡金属离子的传感器应用于环境监测。

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