Conclusion This simple double-channel assay procedure is accurate and reliable. It may be an effective method of sample blank compensation.

结论双通道测试程序简单，结果准确可靠，不失为一种有效的样本空白补偿方法。

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Auxiliary sample solution by microwave is a kind of sample treatment method with low blank, less secondary pollution, saving energy and reducing Labour strength.

微波辅助制样技术是一种快速、低空白、二次污染少、节约能源并降低分析人员劳动强度的样品处理方法。

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Sample blank experiment emendated disturbance produced from oxidant and reducer. The method had obvious anti-jamming function in wastewater.

同时做样品空白实验，校正了氧化还原性物质产生的干扰，对废水有明显的抗干扰能力。

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