亚甲基蓝分光光度法测定水中硫化物结果偏低的原因剖析

天津科技 ›› 2025, Vol. 52 ›› Issue (3): 17-19+23.

亚甲基蓝分光光度法测定水中硫化物结果偏低的原因剖析

赵仪琳, 窦道科, 王爱平, 黎亮, 刘小菲, 袁一方

天津市滨海新区生态环境监测中心天津 300457

收稿日期:2025-02-05 出版日期:2025-03-25 发布日期:2026-01-05

Study on causes for low determination results of sulfide in water by methylene blue spectrophotometry

ZHAO Yilin, DOU Daoke, WANG Aiping, LI Liang, LIU Xiaofei, YUAN Yifang

Tianjin Binhai New Area Ecological Environment Monitoring Center,Tianjin 300457, China

Received:2025-02-05 Online:2025-03-25 Published:2026-01-05

摘要/Abstract

摘要： 为了对导致亚甲基蓝分光光度法测定水中硫化物结果偏低的原因进行研究,分别对实验用水、实验试剂、实验速度及显色时间进行分析比对。结果表明,在实验分析所确定的最佳实验条件基础上,校准曲线具有良好的线性,相关系数>0.999,质控样的测量结果均在保证值范围内,相对标准偏差（RSD）=1.0%（n= 6）。

关键词: 水中硫化物, 亚甲基蓝分光光度法, 实验用水, 实验试剂, 显色反应时间

Abstract: This paper studies the causes for the low determination results of sulfide in water by methylene blue spectrophotometry. The experimental water,the experimental reagent,the experimental speed and the color developing time are analyzed and compared respectively. The results show that under the optimal experimental conditions determined by the experimental analysis,the calibration curve is linear,the correlation coefficient is 0.999,and the quality control samples are all within the guaranteed range. The relative standard deviation （RSD） is 1.0% （n = 6）.

Key words: sulfide in water, methylene blue spectrophotometry, experimental water, experimental reagent, color reaction time

中图分类号:

X824

赵仪琳, 窦道科, 王爱平, 黎亮, 刘小菲, 袁一方. 亚甲基蓝分光光度法测定水中硫化物结果偏低的原因剖析[J]. 天津科技, 2025, 52(3): 17-19+23.

ZHAO Yilin, DOU Daoke, WANG Aiping, LI Liang, LIU Xiaofei, YUAN Yifang. Study on causes for low determination results of sulfide in water by methylene blue spectrophotometry[J]. TIANJIN SCIENCE & TECHNOLOGY, 2025, 52(3): 17-19+23.