土壤样品中铅和镉的微波消解法研究

利用微机控制的微波－聚四氟乙烯高压溶出装置，对土壤样品中的铅和镉两种重金属的消解进行了研究，结果表明，微波消解法具有较为满意的准确度与精密度，制样效率大大提高。     

大气环境中二硫化碳分析方法的选择研究

应用气相色谱Ｎｉ＾６３电子捕获检测器，在用６２０１红色担体为基体，涂１０％ＯＶ－１０１固定液的玻璃柱上，以甲苯作吸收液，对空气中ＣＳ２进行定量检测，其最低检出浓度可达０．００５ｍｇ／ｍ＾３，方法精密度好，ＳＯ２和Ｈ２Ｓ等不干扰测定，经现场实际测试，能适用于大气环境中微量ＣＳ２的分析。     

水中有机物的毛细管色谱法测定

以大孔径树脂为富集剂,逆流串联富集法,一次性富集水中有机物;以毛细管气相色谱法测定了地面水、工业废水中硝基苯类、苯胺类,苯酚类等15种有机物。难分离对的分离度均大于1.5。精密度、准确度均满足气相色谱分析的要求。     

气相色谱法分离测定工业废气中乙酸乙酯、异丙醇、甲苯的方法研究

研究了用气相色谱法分离测定工业废气中乙酸乙酯、异丙醇、甲苯含量，进行了各种色谱条件选择、精密度、样品回收率、方法检出限及样品稳定性实验．     

石墨炉原子吸收光谱法测定海水中的三丁基锡

本文采用石墨炉原子吸收光谱法（ＧＦＡＡＳ）测定海水甲苯抽提液中的三丁基锡。文中考察了１４种基体改进剂对灵敏度的影响，选出了能显著提高测定灵敏度的Ｃａ－Ｃｒ基体改进剂，以０．５／０．１ｍｇ／ｍｌ的浓度比例对８个实样进行了测定，其相对标准偏差（ＲＳＤ）为３％，其特征浓度为７ｐｇ，回收率在８８％￣１０４％之间，成功地应用于近海沉积物对三丁基锡吸附规律的研究。     

Direct hydride derivatization of methyl- and ethylmercury chlorides in aqueous solution with KBH4

ＩｎｔｒｏｄｕｃｔｉｏｎＲａｐｉｄａｎｄｓｅｎｓｉｔｉｖｅａｎａｌｙｔｉｃａｌｍｅｔｈｏｄｓｆｏｒｔｈｅｄｅｔｅｒｍｉｎａｔｉｏｎｏｆｍｅｒｃｕｒｙａｎｄｒｅｌａｔｅｄｃｏｍｐｏｕｎｄｓｉｎｅｎｖｉｒｏｎｍｅｎｔａｌｓａｍｐｌｅｓａｒｅｉｍｐｅｒａｔｉｖｅｌｙｄｅｍａｎｄｅｄｓｉｎｃｅｖａｒｉｏｕｓｃｈｅｍｉｃａｌｆｏｒｍｓｏｆｍｅｒｃｕｒｙｉｎｔｈｅｎａｔｕｒａｌｅｎｖｉｒｏｎｍｅｎｔｃａｎｂｅｈａｖｅｄｉｆｆｅｒｅｎｔｌｙ ,ｔｈｅｒｅｂｙａｆｆｅｃｔｉｎｇｉｔｓｂｉｏｇｅｏｃｈｅｍｉｃａｌｂ…     

水质·杀菌剂多菌灵的测定固相萃取-HPLC法

本方法是用固相萃取法萃取水和废水中的多菌灵,取浓缩纯化后的有机相直接进样到高效液相色谱仪,用二极管矩阵检测器检测,根据保留时间外标法定量.     

基于超高效液相色谱串联质谱法的番茄果实和土壤中氟吡菌胺残留测定

建立了番茄果实和土壤中氟吡菌胺残留的超高效液相色谱-串联质谱(UPLC-MS/MS)检测方法。用乙腈水溶液提取样品中的氟毗菌胺,以C_(18)柱为分析柱、乙腈-甲酸水溶液为流动相,采用超高效液相色谱-串联质谱多反应监测、电喷雾正离子源、外标法定量。氟吡菌胺在0.05~1.00 mg/L范围内与峰面积呈良好的线性关系,线性方程为y=6964.10x-143.28,决定系数为0.996 8。向对照番茄果实、对照土壤中分别添加氟吡菌胺标样,使其添加量分别为0.10 mg/kg、0.40 mg/kg和2.00 mg/kg,平均回收率分别为92.43%~103.32%和92.75%~104.46%,相对标准偏差分别为3.8%~4.9%和3.4%~4.4%。番茄果实和土壤中氟吡菌胺的定量限分别为1.0μg/kg和1.7μg/kg,检出限分别为0.3μg/kg和0.5μg/kg。     

Landfill gas - a potential environmental hazard

Methane derived from the decomposition of organic material contained within a landfill may escape beyond the site boundary where it can pose an explosion or fire hazard. Methods are described to prevent die occurrence of such lateral gas migration. Problems due to the accumulation of gas in buildings, erected on landfill sites, have occurred and techniques are now available to overcome these at some sites. However, it is recognized that at other sites, redevelopment should not be allowed to take place on die grounds of safety.     

An integrated chemical mass balance and source emission inventory model for the source apportionment of PM2.5 in typical coastal areas

The source apportionment of PM_2.5 is essential for pollution prevention. In view of the weaknesses of individual models, we proposed an integrated chemical mass balance-source emission inventory (CMB-SEI) model to acquire more accurate results. First, the SEI of secondary component precursors (SO₂, NO_x, NH₃, and VOCs) was compiled to acquire the emission ratios of these sources for the precursors. Then, a regular CMB simulation was executed to obtain the contributions of primary particle sources and secondary components (SO₄^2?, NO₃^-, NH₄⁺, and SOC). Afterwards, the contributions of secondary components were apportioned into primary sources according to the source emission ratios. The final source apportionment results combined the contributions of primary sources by CMB and SEI. This integrated approach was carried out via a case study of three coastal cities (Zhoushan, Taizhou, and Wenzhou; abbreviated WZ, TZ, and ZS) in Zhejiang Province, China. The regular CMB simulation results showed that PM_2.5 pollution was mainly affected by secondary components and mobile sources. The SEI results indicated that electricity, industrial production and mobile sources were the largest contributors to the emission of PM_2.5 gaseous precursors. The simulation results of the CMB-SEI model showed that PM_2.5 pollution in the coastal areas of Zhejiang Province presented complex pollution characteristics dominated by mobile sources, electricity production sources and industrial production sources. Compared to the results of the CMB and SEI models alone, the CMB-SEI model completely apportioned PM_2.5 to primary sources and simultaneously made the results more accurate and reliable in accordance with local industrial characteristics.