Improvement of the Method for Determining Total Nitrogen in Water Quality Using Alkaline Potassium Persulfate Ultraviolet Spectrophotometry

LIU Zhenchao; LI Zhixiong; LU Qianshu; WANG Xiaona; ZHANG Song; HU Yaohua

doi:10.15898/j.ykcs.202302280028

Rock and Mineral Analysis > 2024 > 43(1): 114-123. > DOI: 10.15898/j.ykcs.202302280028

LIU Zhenchao，LI Zhixiong，LU Qianshu，et al. Improvement of the Method for Determining Total Nitrogen in Water Quality Using Alkaline Potassium Persulfate Ultraviolet Spectrophotometry[J]. Rock and Mineral Analysis，2024，43（1）：114−123. DOI: 10.15898/j.ykcs.202302280028

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Improvement of the Method for Determining Total Nitrogen in Water Quality Using Alkaline Potassium Persulfate Ultraviolet Spectrophotometry

Kunming General Survey of Natural Resources Center, China Geological Survey, Kunming 650111, China

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Received Date: February 27, 2023
Revised Date: August 04, 2023
Accepted Date: September 25, 2023
Available Online: November 07, 2023

Abstract

ABSTRACT

Alkaline potassium persulfate (K₂S₂O₈) ultraviolet (UV) spectrophotometry is the routine method to analyze total nitrogen (TN) in water and is important for studying pollutants in water and the geochemical cycling of TN. However, several analytical conditions can influence the accuracy of the results. (1) The blank, purity, and storage time of K₂S₂O₈. For example, a blank UV of K₂S₂O₈ exceeding 0.030 can lead to a significant underestimation of results. (2) The digestion method of bundling colorimetric tubes in high temperature and high pressure is time-consuming. (3) Improper sample storage conditions can lower measurement results. To improve the accuracy and efficiency of TN measurement in water samples, this study compared the storage times of different K₂S₂O₈, different digestion methods, and sample storage methods. The results show that the domestic premium-grade alkaline K₂S₂O₈ should be stored for <30 days (blank UV<0.03). The insertion digestion method is much more efficient (124°C, 20min). Acidification extends samples’ shelf life from 1 day to 7 days. Therefore, choosing domestic premium-grade K₂S₂O₈ and using the modified insertion method for sample digestion results in lower detection limits, higher digestion efficiency, minimal risk of contamination and misplacement, and improved accuracy of TN measurement in water quality analysis.
- potassium persulfate,
- ultraviolet spectrophotometry,
- total nitrogen in water quality,
- method improvement

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References

[1]	左航, 徐晋, 王雪娇, 等. 水质总氮在线分析仪器研究与应用现状[J]. 电子测量技术, 2021, 44(14): 173−176. Zuo H, Xu J, Wang X J, et al. Research and application of instruments for on-line monitoring water quality of total nitrogen[J]. Electronic Measurement Technology, 2021, 44(14): 173−176.
[2]	王玉功, 王华, 刘建军, 等. 沙棘树干茎流液中总氮总磷联合消解的测定方法[J]. 岩矿测试, 2014, 33(5): 665−669. Wang Y G, Wang H, Liu J J, et al. Determination method on total nitrogen and total phosphorus in seabuckthorn stem flow liquid with combined digestion[J]. Rock and Mineral Analysis, 2014, 33(5): 665−669.
[3]	任坤, 潘晓东, 彭聪, 等. 氮氧同位素和水化学解析昭通盆地地下水硝酸盐来源及对环境的影响[J]. 中国地质, 2022, 49(2): 409−419. Ren K, Pan X D, Peng C, et al. Identification of nitrate sources of groundwaters in the Zhaotong Basin using hydrochemistry, nitrogen and oxygen isotopes and its impact on the environment[J]. Geology in China, 2022, 49(2): 409−419.
[4]	张华, 王宽, 宋箭, 等. 不同溶解氧水平上覆水中DOM荧光特性及总氮含量评估[J]. 光谱学与光谱分析, 2016, 36(3): 890−895. Zhang H, Wang K, Song J, et al. The fluorescent properties of dissolved organic matter and assessment of total nitrogen in overlying water with different dissolved oxygen conditions[J]. Spectroscopy and Spectral Analysis, 2016, 36(3): 890−895.
[5]	刘斯文, 黄园英, 赵文博, 等. 赣南北部黄陂河流域离子型稀土矿地区水质与健康风险评价[J]. 岩矿测试, 2022, 41(1): 120−132. Liu S W, Huang Y Y, Zhao W B, et al. Water quality and health risk assessment of an ion-adsorption type REE mining area of the Huangpi River Basin, Northern Ganzhou of China[J]. Rock and Mineral Analysis, 2022, 41(1): 120−132.
[6]	郭子宁, 王旭升, 向师正, 等. 再生水入渗区典型抗生素分布特征与地下水微生物群落影响因素研究[J]. 岩矿测试, 2022, 41(3): 451−462. Guo Z N, Wang X S, Xiang S Z, et al. Distribution characteristics of typical antibiotics in reclaimed water infiltration area and influencing factors of groundwater microbial community[J]. Rock and Mineral Analysis, 2022, 41(3): 451−462.
[7]	李谨丞, 曹文庚, 潘登, 等. 黄河冲积扇平原浅层地下水中氮循环对砷迁移富集的影响[J]. 岩矿测试, 2022, 41(3): 488−498. Li J C, Cao W G, Pan D, et al. Influences of nitrogen cycle on arsenic enrichment in shallow groundwater from the Yellow River alluvial fan plain[J]. Rock and Mineral Analysis, 2022, 41(3): 488−498.
[8]	韩斌, 林法祥, 丁宇, 等. 海州湾近岸海域水质状况调查与风险评价[J]. 岩矿测试, 2019, 38(4): 429−437. Han B, Lin F X, Ding Y, et al. Quality survey and risk assessment of the coastal waters of Haizhou Bay[J]. Rock and Mineral Analysis, 2019, 38(4): 429−437.
[9]	王燕, 王艳洁, 赵仕兰, 等. 海水中溶解态总氮测定方法比对及影响因素分析[J]. 海洋环境科学, 2019, 38(4): 644−648. Wang Y, Wang Y J, Zhao S L, et al. Method comparison and analysis of influence factors for determination of dissolved total nitrogen in seawater[J]. Marine Environmental Science, 2019, 38(4): 644−648.
[10]	丁明军, 杨慧中. 水中总磷和总氮含量的离子色谱测定法[J]. 分析化学, 2012, 40(3): 381−385. Ding M J, Yang H Z. Determination of total phosphorus and nitrogen in water by ion chromatography[J]. Chinese Journal of Analytical Chemistry, 2012, 40(3): 381−385.
[11]	欧阳钧. 离子色谱法测定水中总氮[J]. 理化检验(化学分册), 2014, 50(7): 906−907. Ouyang J. Determination of total nitrogen in water by ion chromatography[J]. Physical Testing and Chemical Analysis (Part B: Chemical Analysis), 2014, 50(7): 906−907.
[12]	张国郁. 离子色谱法测定生活饮用水中总氮和总磷[J]. 理化检验(化学分册), 2014, 50(12): 1577−1578. Zhang G Y. Determination of total nitrogen and total phosphorus in drinking water by ion chromatography[J]. Physical Testing and Chemical Analysis (Part B: Chemical Analysis), 2014, 50(12): 1577−1578.
[13]	杨雪. 离子色谱法测定地表水中总氮和总磷[J]. 理化检验(化学分册), 2015, 51(11): 1619−1620. Yang X. Determination of total nitrogen and total phosphorus in surface water by ion chromatography[J]. Physical Testing and Chemical Analysis (Part B: Chemical Analysis), 2015, 51(11): 1619−1620.
[14]	唐景静, 黎丽萍, 区一杭. 燃烧氧化-电化学法测定地表水和废水中的总氮[J]. 中国环境监测, 2016, 32(1): 108−111. Tang J J, Li L P, Qu Y H. The determination of total nitrogen in surface water and waste water samplers by burning oxidation-electrochemical method[J]. Environmental Monitoring in China, 2016, 32(1): 108−111.
[15]	赵洋甬, 赵建平, 黄绍荣, 等. 闭管消解-萘乙二胺分光光度法测定水中总氮[J]. 中国环境监测, 2012, 28(1): 57−59. Zhao Y Y, Zhao J P, Huang S R, et al. Determination of total nitrogen in water by closed digestion N-(1-naphthyl)ethyle chromogenic reaction[J]. Environmental Monitoring in China, 2012, 28(1): 57−59.
[16]	梁康甫, 杨慧中. 水质总氮在线检测的光谱数据校正方法[J]. 环境工程学报, 2016, 10(12): 7396−7400. Liang K F, Yang H Z. Calibration method for spectral data of on-line total-nitrogen detection in water[J]. Chinese Journal of Environmental Engineering, 2016, 10(12): 7396−7400.
[17]	凌琪, 李组成, 罗梦洋, 等. 智能消解/紫外分光光度法测定高氨氮污水中总氮[J]. 中国给水排水, 2014, 30(16): 117−119. Ling Q, Li Z C, Luo M Y, et al. Measuring TN in high ammonia nitrogen domestics sewage by smart digester and ultraviolet spectrophotometry[J]. China Water & Wastewater, 2014, 30(16): 117−119.
[18]	王中荣, 魏福祥, 王盼盼, 等. 微顺序注射-镉柱还原分光光度法测定海水中总氮[J]. 分析化学, 2016, 44(9): 1328−1334. Wang Z R, Wei F X, Wang P P, et al. Determination of total nitrogen in seawater by micro sequential injection-cadmium column reduction spectrophotometry[J]. Chinese Journal of Analytical Chemistry, 2016, 44(9): 1328−1334.
[19]	杨颖, 程祥圣, 刘鹏霞. 紫外光照还原-流动注射分光光度法测定海水中硝酸盐[J]. 理化检验(化学分册), 2011, 47(5): 514−516. Yang Y, Cheng X S, Liu P X. FI-spectrophotometric determination of nitrate in seawater by UV irradiation reduction[J]. Physical Testing and Chemical Analysis (Part B: Chemical Analysis), 2011, 47(5): 514−516.
[20]	贾岳清, 周昊, 殷惠民, 等. 水中总氮测定方法的研究进展[J]. 工业水处理, 2020, 40(2): 1−5. Jia Y Q, Zhou H, Yin H M, et al. Progress in determination of total nitrogen in water[J]. Industrial Water Treatment, 2020, 40(2): 1−5.
[21]	周英杰, 王淑梅, 陈少华. 影响总氮测定的关键因素研究[J]. 环境工程, 2012, 30(1): 106−110. Zhou Y J, Wang S M, Chen S H. Key factors on the accuracy of total nitrogen analysis[J]. Environmental Engineering, 2012, 30(1): 106−110.
[22]	祝旭初, 周雪莲, 雷迅, 等. 对测定总氮新标准( HJ636—2012)的探讨[J]. 中国给水排水, 2013, 29(16): 94−97. Zhu X C, Zhou X L, Lei X, et al. Discussion on new standard method HJ636—2012 for determining total nitrogen[J]. China Water & Wastewater, 2013, 29(16): 94−97.
[23]	郝冬亮. 碱性过硫酸钾消解紫外分光光度法测定总氮的影响因素[J]. 中国给水排水, 2014, 30(12): 148−150. Hao D L. Influence factors of alkaline potassium persulfate digestion UV spectrophotometry for determination of total nitrogen[J]. China Water & Wastewater, 2014, 30(12): 148−150.
[24]	张念, 刘祖文, 郭云, 等. 浸矿废水中总氮测量的影响因素及相关对策[J]. 工业水处理, 2016, 36(5): 102−105. Zhang N, Liu Z W, Guo Y, et al. Influential factors and related countermeasures of the determination of TN in mine leaching wastewater[J]. Industrial Water Treatment, 2016, 36(5): 102−105.
[25]	林莉莉, 钟旋, 包思聪, 等. 影响水中总氮检测准确度的关键因素探析[J]. 环境工程, 2017, 35(Supplement): 119−122. Lin L L, Zhong X, Bao S C, et al. Research on the key factors influencing on detection of total nitrogen in water[J]. Environmental Engineering, 2017, 35(Supplement): 119−122.
[26]	蒋然, 柴欣生, 张翠. 影响总氮准确定量的光谱检测因素[J]. 中国环境监测, 2012, 28(4): 45−47. Jiang R, Chai X S, Zhang C. Effects of spectroscopic uncertainties on total nitrogen quantification[J]. Environmental Monitoring in China, 2012, 28(4): 45−47.
[27]	罗琼, 刘则华, 尹华, 等. 国产过硫酸钾不能用于水样总氮测定的原因解析和对策[J]. 中国给水排水, 2018, 34(4): 110−113. Luo Q, Liu Z H, Yin H, et al. Analysis and countermeasure of total nitrogen determination failure in water sample with domestic potassium persulfate[J]. China Water & Wastewater, 2018, 34(4): 110−113.
[28]	王小剑, 张海霞, 蔡昂祖, 等. 总氮测定过程中空白吸光值偏高的原因分析[J]. 化学研究与应用, 2021, 33(4): 741−748. Wang X J, Zhang H X, Cai A Z, et al. Cause analysis of high blank absorbance in determination of total nitrogen[J]. Chemical Research and Application, 2021, 33(4): 741−748.
[29]	晁雷, 曹雨, 李亚峰. 水质总氮测定时空白值的影响因素[J]. 沈阳建筑大学学报(自然科学版), 2021, 37(5): 949−954. Chao L, Cao Y, Li Y F. Influencing factors of blank value in the determination of total nitrogen in water[J]. Journal of Shenyang Jianzhu University (Natural Science), 2021, 37(5): 949−954.
[30]	潘忠成, 李敏. HJ636—2012测定总氮时影响空白值因素分析[J]. 环境工程, 2016, 34(1): 126−129. Pan Z C, Li M. Analysis of influencing factors on the blank value of total nitrogen determination by HJ636—2012[J]. Environmental Engineering, 2016, 34(1): 126−129.
[31]	薛程, 吕晓杰, 王允. 水中总氮测定方法存在问题的研究及改进[J]. 中国环境监测, 2018, 34(3): 123−127. Xue C, Lyu X J, Wang Y. Research on the problems and improvement of total nitrogen determination method in water[J]. Environmental Monitoring in China, 2018, 34(3): 123−127.
[32]	陈松, 梁娟, 蒲宗耀, 等. 碱性过硫酸钾测定总氮的改进[J]. 印染, 2018(1): 54−56. Chen S, Liang J, Pu Z Y, et al. Improvement for determination of total nitrogen in water with alkaline potassium persulfate[J]. China Dyeing & Finishing, 2018(1): 54−56.
[33]	钟金鸣, 王树谦. 滏阳河总氮测定中水样保存条件的探究[J]. 水电能源科学, 2018, 36(7): 43−46. Zhong J M, Wang S Q. Prediction model of total nitrogen concentration in Qinghe Reservoir based on grey relational grade and BP neural network[J]. Water Resources and Power, 2018, 36(7): 43−46.

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Improvement of the Method for Determining Total Nitrogen in Water Quality Using Alkaline Potassium Persulfate Ultraviolet Spectrophotometry

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