Determination of Chloracetic Acids in Drinking Water by Ion Chromatography Using Silver Oxide as Precipitant Eliminating Interference of Chlorate in Matrix

Fu, Hou-Tun; Zhao, Limin; Luo, Man; Zhang, Hongyu; Zhang, Jie

doi:10.1016/s1872-2040(08)60076-6

Cited by 8 publications

(6 citation statements)

References 2 publications

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“…Silver oxide nanomaterials (Ag 2 O NMs) are widely used in catalysis [ 1 , 2 ], sensors [ 3 ], preparation of antimicrobial materials [ 4 ], drinking water-related applications [ 5 ], etc. It is an intrinsic p-type semiconductor with a band gap of around 1.5 eV.…”

Section: Introductionmentioning

confidence: 99%

Dielectric Barrier Discharge (DBD) Plasma Assisted Synthesis of Ag2O Nanomaterials and Ag2O/RuO2 Nanocomposites

Ananth

Mok

2016

Nanomaterials

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Silver oxide, ruthenium oxide nanomaterials and its composites are widely used in a variety of applications. Plasma-mediated synthesis is one of the emerging technologies to prepare nanomaterials with desired physicochemical properties. In this study, dielectric barrier discharge (DBD) plasma was used to synthesize Ag2O and Ag2O/RuO2 nanocomposite materials. The prepared materials showed good crystallinity. The surface morphology of the Ag2O exhibited “garland-like” features, and it changed to “flower-like” and “leaf-like” at different NaOH concentrations. The Ag2O/RuO2 composite showed mixed structures of aggregated Ag2O and sheet-like RuO2. Mechanisms governing the material’s growth under atmospheric pressure plasma were proposed. Chemical analysis was performed using Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS). Thermogravimetric analysis (TGA) showed the thermal decomposition behavior and the oxygen release pattern.

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Section: Introductionmentioning

confidence: 99%

Dielectric Barrier Discharge (DBD) Plasma Assisted Synthesis of Ag2O Nanomaterials and Ag2O/RuO2 Nanocomposites

Ananth

Mok

2016

Nanomaterials

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“…Howeverthe sample preparation steps areheavy to run and time-consuming, which may considerGCanalysis of HAAtedious and expansive [19,20]. LC methods aredivided into two categories: (i) reversed-phaseliquid chromatography [24] and (ii) ion chromatography (IC) [25]. Regardless on the technique used, the sample is either injected directly or after a preconcentration step(online or offline) on a solid phase extraction (SPE) cartridge.Direct LC methods can be achieved thanks to anelectromembrane extraction (EME) followed byUV detection [26] or a LC/MS/MS technique [27].…”

Section: State Of the Art Of Analytical Methodsmentioning

confidence: 99%

“…Regardless on the technique used, the sample is either injected directly or after a preconcentration step(online or offline) on a solid phase extraction (SPE) cartridge.Direct LC methods can be achieved thanks to anelectromembrane extraction (EME) followed byUV detection [26] or a LC/MS/MS technique [27]. Several types of detectionare available with IC methods, the most frequent being conductimetry(CD) [25], possibly with preconcentration SPE cartridge for a better sensitivity [28]. The second type of IC detection is MS, often used in tandem [29,30].…”

Section: State Of the Art Of Analytical Methodsmentioning

confidence: 99%

Direct determination of trace-level haloacetic acids in drinking water by two-dimensional ion chromatography with suppressed conductivity

Verrey

Louyer

Thomas

et al. 2013

Microchemical Journal

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International audienceDuring the treatment process of drinking water, disinfectants (chlorine, ozone, chlorine dioxide) react on water containing organic matter and bromide to produce disinfection by-products at trace levels. Among them, five of the nine existing halo-acetic acids (HAAs) are commonly found in drinking water (monochloroacetic acid (MCAA), dichloroacetic acid (DCAA), monobromoacetic acid (MBAA), dibromoacetic acid (DBAA), and Trichloroacetic acid (TCAA)), including four classified in the 2B IARC group of potential carcinogens (BCAA, DBAA, DCAA, TCAA). With respect to drinking water quality, guidelines are proposed by WHO (2006) and water quality standards are imposed in many countries such as less than 100 μg/L for the sum of the five HAAs by US EPA (1998) and Canadian Health Department (2008). For this purpose, two analytical methods are commonly used, GC/MS with derivatization and LC/MS, UV or conductivity. A new method, based on two-dimensional ion chromatography (IC 2D) with suppressed conductivity is proposed. This method presents the main advantage of offering a quick implementation compared to GC or LC methods: direct injection, slight maintenance, lower cost of investment, by leading to good performances (specificity and sensitivity). The use of two different selectivity columns, and the fractionation on the first dimension canceling interferences, improves the specificity. The sensitivity is enabled by interfacing a preconcentration column between the two different internal diameter columns. The analytical conditions are optimized for the analysis of nine HAAs. The performances of the method are evaluated. The optimized method applied to natural water samples demonstrates its ability to quantify HAAs at trace levels in drinking water

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“…Применение капиллярного электрофореза с масс-спектрометрической регистрацией позволило достигнуть пределов обнаружения 7•10 -5 -1•10 -4 мг/л [17]. Прямое ионохроматографическое определение ХУК с кондуктометрическим детектированием (ИХ-КД) с пределами обнаружения 3.6•10 -3 -8•10 -2 мг/л описано в [18,19]. Применение двумерной ионной хроматографии [20,21] позволило понизить пределы обнаружения до 3•10 -4 -1.7•10 -3 мг/л.…”

Section: Introductionunclassified

Determination of chloroacetic acids using ion chromatography with liquid-phase microextraction preconcentration

Sirotkin¹,

Krylov²,

Elipasheva³

et al. 2020

АиК

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С целью повышения чувствительности ионохроматографического определения моно-, ди-, и трихлоруксусной кислот (ХУК) в воде предложено предварительное эмульсионное микроэкстракционное концентрирование. Эмульгирование экстрагентов осуществляли с помощью ультразвукового воздействия. В качестве экстрагентов использованы диэтиловый и метил-трет-бутиловый эфиры. Проведенное сравнение экстрагентов показало преимущества метил-трет-бутилового эфира: стабильную агрегацию в отдельную фазу после диспергирования, отсутствие потерь экстрагента на стадиях анализа вследствие летучести. Для снижения пределов обнаружения и улучшения ионохроматографического разделения ХУК проводили замену органической матрицы экстракта на водную путем испарения экстрагента при комнатной температуре и растворения сухого остатка в элюенте. Осуществление данной операции позволило также устранить сложности, связанные с анализом органических экстрактов методом ионной хроматографии с кондуктометрическим детектированием. Экспериментально доказано отсутствие потерь искомых аналитов на данной стадии. Установлены зависимости эффективности микроэкстракционного концентрирования от различных параметров процесса (время ультразвукового воздействия, время центрифугирования, объем экстрагента, концентрация солевой добавки). Достигнуты пределы обнаружения 1•10-3-8•10-3 мг/л, что в 20-600 раз ниже, чем предельно допустимые значения для ХУК в питьевой воде. Преимуществами методики перед опубликованными работами являются также удаление мешающих примесей на стадии концентрирования ХУК, малые объемы используемой воды (4.1 мл) и вводимой в хроматограф пробы (50 мкл). Относительная погрешность определения не превышает 25 %. Предлагаемая методика апробирована анализом образцов водопроводной воды. Обнаружены моно-и дихлоруксусная кислоты, их содержание не превышало значений ПДК. Ключевые слова: хлоруксусные кислоты, ионная хроматография, микроэкстракционное концентрирование.

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Determination of Chloracetic Acids in Drinking Water by Ion Chromatography Using Silver Oxide as Precipitant Eliminating Interference of Chlorate in Matrix

Cited by 8 publications

References 2 publications

Dielectric Barrier Discharge (DBD) Plasma Assisted Synthesis of Ag2O Nanomaterials and Ag2O/RuO2 Nanocomposites

Dielectric Barrier Discharge (DBD) Plasma Assisted Synthesis of Ag2O Nanomaterials and Ag2O/RuO2 Nanocomposites

Direct determination of trace-level haloacetic acids in drinking water by two-dimensional ion chromatography with suppressed conductivity

Determination of chloroacetic acids using ion chromatography with liquid-phase microextraction preconcentration

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