离子色谱－原子吸收联用测定水体中的Fe（Ⅲ）和Fe（Ⅱ）

研究离子色谱（ＩＣ）与石墨炉原子吸收光谱（ＧＦＡＡＳ）联用测定水体中铁形态的方法。用Ｓｈｉｍ－ｐａｃｋ阳离子交换柱分离Ｆｅ（Ⅲ）和Ｆｅ（Ⅱ），用石墨炉原子吸收法检测，Ｆｅ（Ⅱ）和Ｆｅ（Ⅲ）的检出限分别为３．８ｎｇ／ｍｌ和７．７ｎｇ／ｍｌ。本方法已用于检测自来水和河水的铁的价态，取得了令人满意的结果。     

气相色谱法测定工业废气中二硫化碳

采用活性炭采样管富集工业放心气中二硫化碳，以无水乙醇为解吸溶剂，１，２，３－三（２－氰基乙氧基）丙烷固定液，Ｃｈｒｏｍｏｓｏｒｂ Ｗ－ＨＰ－ＡＷ－ＤＭＣＳ载体，用火焰光度检测器进行色谱测定。进行了采样方法、样品保存、干扰物质及最佳色谱条件等项条件试验。方法的采样效率为９８－１００％；精密度实验的变异系数为２．８－６．６％；平均加标回收率为８８．０－１００．３％；按１Ｌ采样体积计，方法的最低检出浓度     

上海市环境空气中多环芳烃与苯并[a]芘的监测分析

对实施汽油无铅化前后上海市环境空气中苯并[a]芘和多环芳烃的浓度变化进行了追踪研究。用中流量总悬浮颗粒物采样器、超细玻璃纤维滤膜连续3季(1999-2000年的春、秋、夏)监测了3个监测点环境空气中7组8种多环芳烃{(PAHs)-苯并[a]芘(BaP)、荧蒽(FLT)、苯并[a]蒽(BAA)、屈(CRY)、苯并[b]荧蒽(BBF)、苯并[k]荧蒽(BKF)、二苯并[a,h]蒽(DBA)和苯并[ghi]苝(BGP)}的浓度,并用高效液相色谱法进行分析,共获得81个PAHs的数据。结果表明,PAHs和BaP的浓度与监测点位车流量相关,呈现规律为秋>春>夏。BaP的最大值出现在交通繁忙区,为7.3ng/m3;次大值出现在交通与商业混合区,为6ng/m3;清洁对照点出现的最大值为4.3ng/m3,是27个样品中的第3高值。在3季监测的样本中,3个相同的最小值(0.1ng/m3)均出现在清洁对照点。BBF和BGP的浓度在每一季节、每个点上都达到最高值和次高值,而DBA和BaP浓度则出现最低值和次低值。通过与历史数据的比较,论述了上海市环境空气中BaP污染形成原因、影响因素以及控制对策。研究表明,20世纪80年代以来,上海通过调整城市工业布局、老城区拆迁、实行无燃煤区和基本无燃煤区等政策,以及推行中小燃煤锅炉改造(包括除尘技术、设备的进步和效率的提高)和市区居民生活100％燃气化等多项措施,先后关闭     

高效液相色谱法测定增塑剂邻苯二甲酸二辛酯的方法研究

塑胶制品厂废气排放中，把增塑邻苯二甲酯经二氯甲烷吸收浓缩后，采用ODS柱C18分离，由此外检测器检定。当采气体积为40L时，邻苯二甲酸二辛酯的最低检出限可达0．05mg／m^3。     

水生腐殖酸分子量分布研究——Ⅰ.串联凝胶色谱法测定水生腐殖酸分子量分布

考察了测定水生腐殖酸分子量分布及其平均分子量的串联凝胶色谱法。结果表明,使用Sepbadex G-25和G-100两种凝胶的色谱柱系统的分离范围可从分子量1000左右到数万,几乎包括了水生腐殖酸分子量分布的整个区段。这样的串联凝胶色谱柱的标定曲线为一折线,可用分段函数近似地加以描述。     

The enantiomeric composition of monoterpene hydrocarbons in the defensive secretions ofNasutitermes termites (Isoptera): Inter- and intraspecific variations

Summary Frontal gland secretions of termite soldiers of the speciesNasutitermes costalis, N. ephratae, N. nigriceps, N. rippertii, andN. hubbardii were analyzed. The chiral compositions of the monoterpene hydrocarbons were investigated by means of two-dimensional gas chromatography. Two of them, 3-carene and-pinene were present in the form of (–)-enantiomers of high purity in the majority of the samples. The other monoterpenes,-pinene, camphene, sabinene, limonene, and-phellandrene, exhibited a great variation in the enantiopurity between different species.-Pinene and limonene varied significantly even between different colonies within the species.N. costalis was the only species with an invariable composition of the secretion, independent of the locality or origin.     

低压离子色谱分离化学发光在线检测NO2-S2-

研究了低压离子色谱分离-柱后鲁米诺化学发光检测方法,并分离测定了NO2-和S2-,以碳酸钠作为洗脱液,Luminol-H2O2-NO2-(或S2-)作为化学发光检测体系,对NO2-和S2-两种阴离子进行在线检测.测定的线性范围分别为NO2-:5.0×10-8～10-6g/mL;S2-:1.0×10-8～6.0×10-7g/mL.检测限NO2-为:3.0×10-9g/mL,S2-为:1.4×10-9g/mL.该方法用于水样中NO2-和S2-含量的测定,结果满意.     

离子色谱法测定酸沉降样品中的阳离子

用新型的阳离子分离柱和抑制柱分析雨水中的阳离子（Ｎａ＾＋、ＮＨ４＾＋、Ｋ＾＋、Ｍｇ＾２＋、Ｃａ＾２＋）对这种方法的准确性和可行性进行了论证。     

Polycyclic aromatic hydrocarbons in crude oil-contaminated soil: A two-step method for the isolation and characterization of PAHs

A two-step analytical method is developed for the isolation and characterization of polycyclic aromatic hydrocarbons (PAHs) in crude oil contaminated soil. In the first step, those crude oil components were isolated which are easily mobilized with water from the contaminated soil (determination of groundwater pollution potential). In the second step, the fraction containing the remaining crude oil compounds was extracted using toluene. After the cleanup of the fractions, both fractions were analyzed using high-performance liquid chromatography (HPLC). The HPLC of the toluene extracted fraction shows that along with the sixteen priority pollutants from the US-EPA list, many other polycyclic aromatic hydrocarbons (PAHs) are present as well. It is evident from the chromatograms that a significant amount of PAHs are present as is also the case in the fractions eluted by water. The described method allows the determination of total organic pollutants from crude oil, some of them being potential groundwater contaminants. The major part of the total pollutants could not be mobilized by water and therefore remains in the soil, which was extracted in the second step.