庆阳市地下水中碱度的测定
发布时间:2018-09-18 17:32
【摘要】:目的测定庆阳市地下水的碱度,监测庆阳地下水质变化,为市民安全饮用水提供参考。方法利用多种指示剂进行对比测试研究,以确保检测结果的准确性和可靠性。结果采用酚酞,溴甲酚绿-甲基红混合指示剂滴定效果良好,不仅终点颜色变化明显,而且精密度高,RSD=1.91%。结论利用酸碱滴定法,以酚酞、溴甲酚绿-甲基红混合指示剂可较准确地测定庆阳市地下水中的碱度,得到庆阳市西峰区地下水总碱度为396.05mg/L。
[Abstract]:Objective to determine the alkalinity of groundwater and monitor the change of groundwater quality in Qingyang city, so as to provide reference for safe drinking water. Methods A variety of indicators were used to carry out comparative test to ensure the accuracy and reliability of the test results. Results the titration effect of phenolphthalein, bromocresol green and methyl red mixed indicator was good, not only the terminal color changed obviously, but also the precision of RSD 1.91 was high. Conclusion the alkalinity of groundwater in Qingyang City can be accurately determined by acid-base titration with phenolphthalein and mixed indicator of bromocresol green and methyl red. The total basicity of groundwater in Xifeng area of Qingyang City is 396.05 mg / L.
【作者单位】: 陇东学院应用化学研究所;
【基金】:甘肃省应用化学省级重点实验室项目(GSACK20130113)
【分类号】:R123.1
本文编号:2248619
[Abstract]:Objective to determine the alkalinity of groundwater and monitor the change of groundwater quality in Qingyang city, so as to provide reference for safe drinking water. Methods A variety of indicators were used to carry out comparative test to ensure the accuracy and reliability of the test results. Results the titration effect of phenolphthalein, bromocresol green and methyl red mixed indicator was good, not only the terminal color changed obviously, but also the precision of RSD 1.91 was high. Conclusion the alkalinity of groundwater in Qingyang City can be accurately determined by acid-base titration with phenolphthalein and mixed indicator of bromocresol green and methyl red. The total basicity of groundwater in Xifeng area of Qingyang City is 396.05 mg / L.
【作者单位】: 陇东学院应用化学研究所;
【基金】:甘肃省应用化学省级重点实验室项目(GSACK20130113)
【分类号】:R123.1
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