几种检测溶解性总固体方法的比较

Comparison of several methods for determining the total dissolved solids

中文关键词:  溶解性总固体  水浴法  比较

英文关键词:total dissolved solids  water bath method  compare

中文摘要:

      目的 通过比较几种常见的检测溶解性总固体的方法, 寻求一种结果准、时间短的检测方法, 以便提高检测溶解性总固体的效率。方法 对蒸汽法(国标法)、100 ℃水浴法、烘箱法、电热板、电炉法等几种测定方法的检测结果和检测时间进行比较, 并进行统计学计算分析。结果 电热板法、电炉法的测定结果与国标方法测定结果相比较, 超出国标偏差要求; 100 ℃水浴法测定14份水样的结果与国标法无显著性差异。 结论 用100 ℃水浴法测定饮用水中溶解性总固体结果与国标一致, 且用时比国标法缩短2 d, 显著提高了检测效率, 是值得推广的检测方法。

英文摘要:

      Objective To find an accurate and short time detection method by comparing several common methods of determining the total dissolved solids (TDS), in order to improve the efficiency of detecting the TDS in the future. Methods The detection results and detection time of steam method (national standard method), 100 ℃ water bath method, oven method, electric heating plate method and electric furnace method were compared, and statistical analysis was performed. Results Compared with the national standard method, the results of electric heating plate method and electric furnace method exceeded the national standard deviation requirement. There was no significant difference between the national standard method and 100 ℃ water bath method in determining the total dissolved solids of 14 water samples. Conclusion The determination of TDS in drinking water by 100 ℃ water bath method is consistent with the national standard, and the use time is 2 d shorter than that of the national standard, which significantly improves the detection efficiency, and is a method worth popularizing.