离子色谱法测定污水中阴、阳离子的前处理

研究了离子色谱技术在污水中常见阴、阳离子监测方面的应用。根据大量实验数据提出了水样前处理方法，确定了色谱条件。污水样品经前处理后，阴离子测定结果的相对标准偏差为0.71%-4.4%，回收率为94．6％－108.6%。     

离子色谱测试技术在电力行业化学分析中的综合运用

综述了离子色谱技术在电力行业化学分析中的广泛应用及发展前景,为电厂水汽监测、化学试剂和油中杂质测定、固体样品成分分析快速准确测定开辟了新的途径.     

离子色谱在中草药成分分析中的应用

离子色谱是用于分离分析不同基质样品中离子性物质的一种新型高效液相色谱技术。自1975年发展至今,已被广泛应用于环境、能源、食品、医药等多个领域,具有操作简单、分析快速、灵敏度和选择性高,且能同时分离测定多种组分等优点。近年来,随着离子色谱技术自身迭代发展,可测定分析的样品种类已包括离子、糖类、氨基酸、有机酸(碱)等,同时离子色谱法也越来越成为针对中草药复杂组分中单个有效成分分析与鉴定的重要手段。本文介绍了离子色谱技术的不同类型、原理及研究进展,整理了近几十年离子色谱在中草药糖苷类、氨基酸、蛋白质、无机盐以及有机酸、生物碱类和黄酮类等复杂成分中的应用情况;检索文献发现,离子交换色谱、电导检测法为离子色谱中最常用的技术类型和检测方式,且目前离子色谱在生物碱类成分分析中的应用展现出较传统分析方法更好的优势,但在无机阴离子的形态分析和黄酮类、苯丙素类、甾体类等主要活性物质中的直接应用研究报道较少。最后,综述了离子色谱(联用)新技术及其在中草药中的最新进展,并对该色谱方法未来在复杂组分分离分析方面的应用进行了探讨和展望,为离子色谱技术分析中草药复杂化学成分的进一步发展提供理论参考。     

离子排斥色谱法检测污泥中的挥发性脂肪酸(VFA)

挥发性有机酸(VFA)是污水处理厂污泥消化过程中的主要产物。传统的方法只能测定样品中VFA的总含量而不能测出单种酸(如乙酸)的含量。本方法将离子色谱技术应用于污泥中VFA组分的分别测定中,通过实际的样品测定和加标回收率、精密度、CV和等一系列质控检验和污水中的高浓度干扰阴离子的干扰性影响检验证明,离子色谱技术能够很好地应用于测定污泥消化过程中的VFA成分测定,能够为工艺运行提供更好的指示性参数。     

离子色谱技术的重要进展和我国近年的发展概况

介绍了离子色谱技术近年的几项重要进展,包括Reagent-Free离子色谱系统,简易阀切换技术,弱电离有机酸的高灵敏分析,快速分析色谱柱,与前处理技术、电感耦合等离子体质谱和氢化物发生-原子荧光光谱联用,在生物医药分析中的应用等;并概述了近年来我国离子色谱在硬件技术研发、仪器检定规范的修改、标准方法和药典修订等方面的进展。     

书刊征订

《色谱在材料分析中的应用》该书为《色谱技术丛书》之一,系统介绍了材料分析中应用的各种色谱方法与技术,内容包括气相色谱、高效液相色谱、离子色谱、凝胶渗透色谱、毛细管电泳以及一些联用技术在无机材料中的金属元素和非金属元素的分析、无机材料和     

《离子色谱方法及应用》(第三版)

正本书是《色谱技术丛书》的一个分册,系统阐述了离子色谱的原理、仪器、技术及应用。全书首先概述了离子色谱的定义、特点及发展趋势,在此基础上详细介绍了离子交换色谱、离子排斥色谱和离子对色谱3种离子色谱的分离机理及影响因素,离子色谱柱填料,离子色谱的抑制技术,离子色谱常用的电化学和光学检测器,离子色谱样品前处理技术以及离子色谱在环境、食品、工业、医疗卫生、药物、农业等领域中的应用。最后,介绍了离子色谱仪器常见故障的排除     

《色谱在材料分析中的应用》

该书为《色谱技术丛书》之一,系统介绍了材料分析中应用的各种色谱方法与技术,内容包括气相色谱、高效液相色谱、离子色谱、凝胶渗透色谱、毛细管电泳以及一些联用技术在无机材料中的金属元素和非金属元素的分析、无机材料和     

《色谱在材料分析中的应用》

该书为《色谱技术丛书》之一,系统介绍了材料分析中应用的各种色谱方法与技术,内容包括气相色谱、高效液相色谱、离子色谱、凝胶渗透色谱、毛细管电泳以及一些联用技术在无机材料中的金属元素和非金属元素的分析、无机材料和     

书刊征订

色谱在材料分析中的应用(ISBN 978-7-122-10567-7)该书为《色谱技术丛书》之一,系统介绍了各种色谱方法与技术,包括气相色谱、高效液相色谱、离子色谱、凝胶渗透色谱、毛细管电泳等方法以及一些联用技术在无机材料中的金属元素和非金属元素的分析、无机材料和高分子材料结构     

改进的离子色谱系统监测重庆嘉陵江水质（英文）

The w ater quality monitoring operation to evaluate the w ater quality of polluted river is an extremely im po rtant task fo r the river-w atershed m anagem ent/co ntro l based o n the enviro nm ental po licy.In this study,the no vel,sim ple and co nvenient w ater quality m o nito ring o f Jialing-River in Cho ngqing,China w as carried o ut using an advanced io n chro m ato graphy(IC) co nsisting o f io n-ex clusio n/catio n-ex change chro m ato graphy(IEC/CEC) with conductivity detection for determining simultaneously the common anions such as SO 2 4,Cl,and NO 3 and the catio ns such as Na +,NH + 4,K +,Mg 2 +,and Ca 2 +,the ion-exclusion chromatography(IEC) w ith visible detectio n fo r determ ining sim ultaneo usly the nutrient co m po nents such as pho sphate and silicate io ns,and the IEC w ith the enhanced co nductivity detectio n using a po st co lum n o f K +-fo rm catio n-ex change resin fo r determ ining HCO 3-alkalinity as an ino rganic-carbo n so urce fo r bio m ass synthesis in bio lo gical reactio n pro cess under the aero bic co nditio ns.Acco rding to the io nic balance theo ry betw een the to tal equivalent co ncentratio ns o f anio ns and catio ns,the w ater quality evaluatio n o f the Jialing-River w aters taking at different sam pling sites in Cho ngqing m etro po litan area w as carried o ut using the advanced IC system.As a result,the effectiveness o f this no vel w ater quality m o nito ring m etho do lo gy using the IC system w as dem o nstrated o n the several practical applicatio ns to a typical bio lo gical sew age treatm ent plant o n Jialing-River o f Cho ngqing.     

螯合物离子色谱

螯合物离子色谱是一种利用螯合物进行不同方式分离和检测的离子色谱模式，目前已经被痕量金属分析广泛采用，本文对一些螯合物阳离子交换色谱、螯合物色谱、阴离子交换色谱和离子对色谱最新进展进行了综述，并采用基本螯合物化学理论（金属螯合物稳定性、金属原子有效电荷、螯合剂能力等）对保留和分离机理进行了讨论。     

Determination of uric acid in human urine by ion chromatography with conductivity detector

A simple,fast,precise and eco-friendly analytical method for the determination of uric acid(UA) in human urine by ion chromatography(IC) was established.The sample pretreatment was not required,only needed centrifugation and filtration.The separation was carried out on a cation exchange column with 2.0 mmol/L nitric acid as mobile phase at the flow-rate 1.0 mL/min.A non-suppressed conductivity detector was used.The IC analysis time for one run was within 10 min under the optimized IC condition.The detection limits were 0.5μg/L(S/N = 3) for uric acid.The recovery was 100.1%while the relative standard deviation (RSD) was 1.8%from 10 measurements.     

Determination of epichlorohydrin in water and sewage samples

The simple, quick and effective methods for the analysis of epichlorohydrin (ECH) in water and sewage samples with the use of gas chromatography have been presented. From among all the methods developed, the procedures for monitoring drinking-water quality and the methods which allow the determination of epichlorohydrin in sewage samples have been selected.

The limits of ECH detection have been determined by direct aqueous injection (DAI) into the chromatographic column and an analysis with the application of a flame ionization detector (FID), a mass spectrometry detector (MS), an electron capture detector (ECD) and atomic emission detection (AED) detectors. The method allows the determination of ECH in water samples at the concentration level of 0.1 mg l⁻¹. Moreover, the developed methods of water samples preparation for chromatographic analysis using the following extraction methods: headspace (HS), stripping with adsorption on solid phase, liquid–liquid extraction (LLE), solid phase extraction (SPE) and solid phase microextraction (SPME) have been evaluated. The limits of ECH detection for each procedure with the application of gas chromatography (GC) combined with various detectors have been determined and their statistical evaluation has been presented. The SPME method allowed us to determine ECH in water samples at the concentration levels of 1.0 ng l⁻¹.

The results of studies on the choice of the selective methods allowing ECH analysis in sewage samples have been demonstrated. The applied SPME method was found to be a quick and effective technique to determine micro trace amounts of ECH in samples containing high amounts of various organic compounds.     

离子色谱法测定饮用水中痕量溴酸盐

建立了一种利用离子色谱法测定饮用水中痕量溴酸盐(BrO<,3><'->)的方法.色谱条件为:IonPac AS19(250mm x4 mm)色谱柱分离,KOH 梯度淋洗,流速1.0 mL/min,抑制电导检测,外标法定量.BrO<,3><'->浓度在2.0～100μg/L范围内有良好的线性,检出限为0.3 ng/mL,...     

Determination of saccharides by high performance anion-exchange chromatography with pulsed amperometric detection

Summary High performance anion-exchange chromatography (HPAC) coupled with pulsed amperometric detection (PAD) under alkaline conditions (pH 13) separates neutral saccharides based upon their molecular size, saccharide composition, and glycosidic linkages. Carbohydrates were detected by oxidation with a gold-working electrode. HPAC-PAD was compared to high performance liquid chromatography (HPLC) with refractive index (RI) detection in terms of selectivity and sensitivity of saccharides. The results indicate that HPAC-PAD was more precise, two orders of magnitude more sensitive (pmol range) and gives better resolution of saccharides than HPLC-RI. HPAC-PAD required less sample preparation and was not subjected to matrix interferences. The use of HPAC-PAD was applied to the analysis of organic materials (plant residues, animal wastes and sewage sludge) and soil.     

Analysis of neutral and basic pharmaceuticals in sewage treatment plants and in recipient rivers using solid phase extraction and liquid chromatography-tandem mass spectrometry detection

Analytical method was developed which allowed for the detection of four beta blockers (acebutolol, atenolol, metoprolol and sotalol), an antiepileptic drug (carbamazepine) and three fluoroquinolone antibiotics (ciprofloxacin, ofloxacin and norfloxacin) with a single pre-treatment and chromatographic method. The method included an isolation and concentration procedure using solid phase extraction, a separation step using high performance liquid chromatography and a detection procedure applying triple quadrupole mass spectrometry, which was working in the multiple reaction monitoring mode. The method was validated for ground, surface and sewage influent and effluent waters. Due to ion suppression in the electrospray source, the signals monitored for the analytes were less intense in sewage waters compared to ground and surface waters. The limits of quantification were as low as 1 ng L(-1) in ground water and 3.5 ng L(-1) in sewage influent. The method was successfully applied to the determination of the target compounds in raw and treated sewages of three treatment plants in Finland and in their recipient rivers. The results showed that many of the studied compounds pose a moderate to high persistency in sewage treatment as well as in the recipient rivers. The analytical protocol presented may be used for more in-depth studies on the occurrence and fate of these commonly used pharmaceuticals in the sewage treatment plants and in the aquatic environment.     

Suppressed ion chromatography for monitoring chemical impurities in steam for geothermal power plants

A suppressed ion chromatography (IC) technique has been evaluated as a chemical monitoring tool for detecting major anions (F-, Cl-, NO3- and SO4(2-)) of condensed steam in geothermal power plants. It is shown that the suppressed IC technique provides a suitable means for preventing possible damage to generating equipment in the geothermal industry. An electrical conductivity detector (0.1 microS sensitivity) with an anion-exchange column (IonPac AS4A-SC), a micro-membrane suppressor (AMMS II), and an isocratic high-pressure pump system were successfully used for detecting low concentrations of inorganic anions. Method detection limits for the anions of interest were <0.184 mg/L. Details of the IC methodology as well as some experimental results obtained during its application for the chemical monitoring of geothermal steam pipes are also described.     

Comparison of high resolution gas chromatography with electron impact and negative ion mass spectrometry detection for the determination of coplanar polychlorobiphenyl congeners in sewage sludges

The three most toxic coplanar PCB 77, 126 and 169 have been identified and quantified at ultra trace levels (0.02-4.8 ng/gdw) in swiss sewage sludge samples applying high resolution capillary gas chromatography (HRGC) and electron impact (EI) as well as negative ion chemical ionization (NCI) mass spectrometry (MS). NCI mass spectra have been dominated by the molecular ion as base peak and virtually no fragmentation has been observed. Detection limits of the planar PCB under single ion monitoring (SIM) conditions have been typically 100 fg for NCI-MS and 1 pg for EI-MS. NCI-MS was the preferred detection method for the determination of very low concentrations of these important contaminants in sewage sludge samples.