论文部分内容阅读
通过实验发现,采用国标方法《生活饮用水标准检验方法消毒副产物指标》(GB/T5750.10—2006)测定饮用水中三氯乙醛时,水中其他2种消毒副产物1,1,1-三氯丙酮与三氯乙酸也可在碱性条件下生成三氯甲烷使测定结果偏高。每100μg/L的1,1,1-三氯丙酮能使三氯乙醛测定结果偏高约90μg/L;每100μg/L三氯乙酸能使三氯乙醛测定结果偏高约18μg/L。为此,在国家标准方法的基础上采用引入修正值的做法,以消除1,1,1-三氯丙酮与三氯乙酸的干扰,使测定结果能准确反映水中三氯乙醛的浓度。
The experiment found that the use of national standard method “standard test method for drinking water disinfection byproduct index” (GB / T5750.10-2006) determination of drinking water, chloral, two other water disinfection by-products 1,1,1 - Trichloroacetone and trichloroacetic acid can also generate trichloromethane in alkaline conditions so that the determination results are high. Per 100μg / L of 1,1,1-trichloroacetone trichloroacetaldehyde determination results can be high about 90μg / L; trichloroacetic acid per 100μg / L trichloroacetic acid determination results can be high about 18μg / L . Therefore, based on the national standard method, the introduction of the correction value is adopted to eliminate the interference of 1,1,1-trichloroacetone and trichloroacetic acid, so that the determination result can accurately reflect the concentration of trichloroacetaldehyde in the water.