气相色谱法测定废水中苯胺类化合物

建立了气相色谱测定废水中5种苯胺类化合物的方法，优化了试验条件。方法在0mg／L-100mg／L之间线性关系良好，N，N-二甲苯胺、苯胺、对甲苯胺、间甲苯胺、邻甲苯胺的检出限分别为0．004mg／L、0．002mg／L、0．013mg／L、0．008mg／L、0．007mg／L，实际废水样品测定的RSD≤1．5％，加标回收率为93．8％～99．5％。     

气相色谱/质谱法测定环境毒饵中溴敌隆

采用气相色谱／质谱联用法测定环境毒饵中溴敌隆，优化了试验条件。方法在0mg／L～10．0mg／L范围内线性良好，检出限为0．01mg／kg，标准溶液测定的相对标准偏差为2．2％～4．6％，样品加标回收率为92．5％-96．3％。     

高效液相色谱法同时测定苯酚及其氯化中间产物

采用高效液相色谱法同时测定次氯酸钠氧化降解苯酚过程中苯酚及其5种氯化中间体，确定了检测波长，讨论了pH值对测定的影响。方法线性良好，苯酚、2-氯苯酚、4-氯苯酚、2，6-二氯苯酚、2，4-二氯苯酚、2，4，6-三氯苯酚的检出限分别为0．01mg／L、0．02mg／L、0．02mg／L、0．02mg／L、0．02mg／L、0．02mg／L，标准溶液测定的相对标准偏差≤0．8％，样品加标回收率为96．0％～102％。     

硫氰酸盐-抗坏血酸体系流动注射光度法测定水中钼

建立了水中钼的硫氰酸盐一抗坏血酸体系流动注射分光光度测定法，优化了试验条件。方法在0mg／L～16mg／L范围内线性关系良好，检出限为0．19mg／L，废水样品测定的RSD≤I．6％，加标回收率为96．3％～104％，与国家标准方法的测定结果一致。     

络合萃取-火焰原子吸收光谱法测定怀山药中铅

建立了DDTE络合、四氯化碳萃取、火焰原子吸收光谱测定怀山药中铅的方法，优化了试验条件，讨论了共存离子的影响。方法在0mg／L-2．00mg／L范围内线性良好，检出限为0．027mg／L，样品测定的相对标准偏差为3．5％，加标回收率为92．1％-102％。     

邻菲啰啉分光光度法测定海水中总铁

采用邻菲哕啉分光光度法测定海水中的总铁，方法在0mg／L～3．00mg／L范围内线性良好，检出限为0．03mg／L，相对标准偏差为3．0％，不同样品的加标回收率为95．2％～108％。     

邻菲哕啉分光光度法测定海水中总铁

采用邻菲哕啉分光光度法测定海水中的总铁，方法在0mg／L～3．00mg／L范围内线性良好，检出限为0．03mg／L，相对标准偏差为3．0％，不同样品的加标回收率为95．2％～108％。     

高效液相色谱法测定玉米作物中苯并(a)芘

采用超声提取-高效液相色谱法测定玉米作物中苯并（a）芘，优化了试验条件。方法在0mg／L-100mg／L范围内线性良好，检出限为0．15mg／L，玉米样品测定的相对标准偏差为5．3％～10．0％，加标回收率〉86．9％。     

离子色谱法测定废气中的丙烯酸

采用离子色谱法测定废气中的丙烯酸，几种常见的无机阴离子对分析无干扰。方法在0．100mg／L～10．0mg／L范围内线性良好，对有组织废气和无组织废气的检出限分别为0．04mg／m3和0．003mg／m3，废气平行样品测定值的相对偏差为3．4％～10．5％，加标样品的回收率为91％～102％。     

火焰原子吸收光谱法测定锰矿恢复区植物中重金属

采用硝酸-高氯酸消解体系、火焰原子吸收光谱法测定锰矿恢复区植物中重金属元素。方法线性良好，锰、铅、铜、铬、镉的检出限分别为0．026mg／L、0．011mg／L、0．004mg,／L、0．025mg／L、0．001mg／L，标准样品的测定结果符合要求，植物样品平行测定的RSD≤1．6％，加标回收率为83．4％-97．6％。     

分光光度法测定废水中草甘膦的探讨

探讨了亚硝基衍生化紫外分光光度法测定废水中草甘膦的适用性,考察了硫酸加入体积对亚硝化反应的影响,提出应根据样品碱度调整硫酸用量。方法与高效液相色谱法测定值的重现性较好,应用于实际废水中草甘膦测定的加标回收率为95%～105%,平行测定的RSD≤1.3%,检出限为0.069 mg/L,检测上限为50.0 mg/L,废水中可能存在的伯胺和叔胺类物质对测定无明显干扰。     

工业废水中痕量汞的直接测定

采用DMA-80型直接测汞仪测定工业废水中的痕量汞,优化了干燥时间、分解温度、释放温度等试验条件。方法在0μg/L~600μg/L范围内线性良好,检出限为5.0×10-5mg/L,工业废水样品平行测定的RSD≤0.2%,加标回收率为96.7%~105%。     

在线蒸馏-无人值守连续流动分析法测定污水中氨氮

采用在线蒸馏-无人值守连续流动分析法对污水中氨氮进行检测,方法在0.00~10.0 mg/L范围内线性良好,检出限为0.014 mg/L,实际样品测定的相对标准偏差为1.24%~4.15%,加标回收率为93.0%~108%,精密度和准确度均能满足污水中氨氮的测定要求。     

Wastewater quality of natural gas fertilizer factory, Fenchuganj and water quality of Kushiara River at the down stream

The physical, chemical and biological characteristics of the wastewater of Natural Gas Fertilizer Factory Ltd. Fenchuganj, Sylhet were determined through extensive laboratory tests in the months of March, July, October and December of the year 2005. Concentration of Suspended Solids was within the range of 445 to 950 mg/L. Bangladesh Industrial Effluent Standards for Suspended Solids is 100 mg/L. Suspended Solids were found above the limit in all the samples. Concentration of Dissolved Solids was found to vary from 576 to 1,456 mg/L. Bangladesh Industrial Effluent Standards, for Dissolved Solids is 2,100 mg/L. Dissolved Solids were found within the limit. Concentration of BOD(5) was found to vary from 4.5 to 8.4 mg/L. Bangladesh Industrial Effluent Standards for BOD(5) is 50 mg/L. For the year 2005, the BOD(5) was found below the limit in all the samples. Dissolved Oxygen of the wastewater was found to be between 2.0 to 3.0 mg/L, which do not satisfy the standard (4.5-8 mg/L). Oil and grease concentration were found in the range of 28 to 68 mg/L, whereas the standard is 10 mg/L for discharge into the inland surface water. In 2005, concentration of Cr(+ 6) was found to vary from 0.01 to 0.156 mg/L in the wastewater. Bangladesh Industrial Effluent Standards, for Cr(+6) is 0.1 mg/L. The concentration of chromium was found above the limit in three samples. Concentration of NO(3) was found to vary from 4.5 to 15.2 mg/L in the wastewater. Bangladesh Industrial Effluent Standards for nitrate is 10 mg/L. The nitrate was found above the limit in three samples. Maximum concentration of ammonia in lagoon 1 was found 1,710 mg/L in month of December. Bangladesh Industrial Effluent Standards for ammonia nitrogen is 100 mg/L. For the year 2005, the ammonia nitrogen was found above the limit in all samples.     

Assessment of current status of zinc in wastewater treatment plants to set effluent standards for protecting aquatic organisms in Japan

New environmental standards for protecting aquatic organisms for zinc (e.g., 0.03 mg/L) in surface waters were set in Japan in 2003. Although wastewater effluent might be one of the major pathways of zinc to public water bodies in Japan, current status of concentration of zinc in wastewater effluent was not clear due to higher detection limits (e.g., 0.5 mg/L) than the level required by the new regulations. This study aims at assessing current status of zinc in wastewater effluent in Japan to revise wastewater effluent standards for protecting aquatic organisms. Survey of zinc in wastewater treatment plants (WWTPs) was carried out in Japan in 2005, setting the detection limits at least 0.01 mg/L. The results of the survey suggested the difficulty to remove zinc (especially dissolved zinc) with conventional activated sludge treatment if concentration of zinc in influent was relatively low. And it was suggested that high concentration of dissolved zinc might be derived from some industries discharging high concentration of zinc. The concentration of zinc in wastewater influent without industrial discharges was about 0.1 mg/L which might be lower than that in wastewater from industries discharging high concentration of zinc. Finally, effluent standards for point sources including WWTPs to public water bodies were set at 2 mg/L in 2006. Based on the results of the survey that it was difficult to remove dissolved zinc discharged from industries at WWTPs, the effluent standards from industries to sewerage were set at the same value of the effluent standards from WWTPs to public water bodies.     

假丝酵母菌对高浓度苯酚的降解效果及SDS对其生长影响

从含酚废水处理池污泥中驯化得到苯酚降解菌——假丝酵母菌FD-1,通过试验考察FD-1对高浓度苯酚废水的降解效果,以及十二烷基磺酸钠(SDS)对高浓度苯酚废水中FD-1菌株生长的影响。试验表明,假丝酵母菌FD-1对苯酚的最大降解质量浓度为1 500 mg/L,降解时间为30 h。当苯酚质量浓度不超过1 000 mg/L时,添加适量的SDS可以显著提高苯酚降解速率,进而缩短苯酚降解时间,SDS的最佳投加量为100 mg/L,超过150 mg/L时FD-1生长受到抑制。     

液液萃取-高效液相色谱法测定水中四乙基铅

采用高效液相色谱紫外检测器测定水中四乙基铅,用二氯甲烷液液萃取,以甲醇/水混合溶液(体积比为95:5)为流动相,Z0RBAX Eclipse XDB-C18色谱柱分离,选择测定波长为280 nm.方法在0.100mg/L～1.00mg/L范围内线性良好,检出限和测定下限分别为0.01μg/L和0.04μg/L,水样平行...     

填充柱气相色谱法测定废水中的乙酸根

废水经蒸馏预处理,采用５％ＰＥＧ２０Ｍ＋０５％Ｈ３ＰＯ４ＣｈｒｏｍｏｓｏｒｂＨＰ８０～１００目,２ｍ×２ｍｍ玻璃填充柱,直接进预处理水样气相色谱法测定废水中的乙酸根,方法操作快速、简便,变异系数为４％和１０％,加标回收率８３％～１０５％,最小检出浓度为２ｍｇ／Ｌ     

自动进样系统结合分光光度法快速测定水质中总磷

基于自动进样系统结合分光光度法,通过对波长、消解条件及显色条件的优化,建立了水中总磷的快速检测分析方法。在优化条件下,总磷的检出限为0.005 mg/L,测定下限为0.020 mg/L。对地表水、生活污水和工业废水3种不同基质的样品进行了加标测定,其回收率为95.0%~102%,相对标准偏差为0.5%~2.7%;与国标方法钼酸铵分光光度法测定水体中总磷进行比对研究,对国家有证标准样品、地表水、生活污水和工业废水测试的结果显示,方法相对偏差为0.4%~3.5%。该方法操作简单、快速、准确,可为应对突发环境事件中总磷的测定提供技术参考。     

绍兴市典型印染废水中重金属锑排放现状及排放源调查

分析和统计的86家印染工业企业当中,废水总排口中的总锑超标率为25.6%,质量浓度0.050 mg/L以下较低排放浓度所占比例最大,达62.8%。印染废水锑排放源主要有涤棉和涤纶化纤类布料的染色、印花工艺废水,碱减量工艺废水等,工业液碱、废酸以及硫酸铝污水处理剂等原料当中含锑浓度较高。印染废水经污水处理厂集中纳管深度处理后,锑排放浓度较低,锑去除效率最高达到88.0%,大大降低了环境地表水体锑污染的风险。