离子色谱法测定酸雨中6种阴离子

离子色谱法测定酸雨中６种阴离子，以流速为１．５１ｍＬ／ｍｉｎ，０．２４ｍｏｌ／Ｌ Ｎａ２ＣＯ３和０．３ｍｏｌ／Ｌ ＮａＨＣＯ３的混和液为淋洗液，在ＹＳＡ８型８００１Ａ－４阴离子交换柱上分离，ＹＳ－１抑制器，ＹＩＣ－８型离子色谱仪电导检测器检测，方法的线性范围均为１００倍，可达２００倍以上，以ＣＩ＾－为例，最小检出限为０．００１，重现性ＣＶ％为０．７６，空白检测偏差Ｓｗｂ＝０．００６８１，回收率为９     

湿法烟气脱硫法鼓泡反应器的气液传质建模

利用双膜理论对湿法烟气脱硫法鼓泡反应器气液传质建立数学模型。通过鼓泡反应的钠碱脱硫实验来验证模型，得到的模型计算结果和实验相吻合。利用模型，通过改变的初始参数来研究对传质的影响。结果表明，提高气流速度、进气浓度、吸收液柱高度和吸收液浓度，有利于传质吸收，提高鼓泡反应器的传质系数和脱硫效率。     

Desulfurizing absorbent for flue gas and its absorption mechanism

A new desulfurizing absorbent for flue gas,i.e.,an organic physical solvent of DMSO(dimethyl sulfoxide) mixed with a relatively small amount of chemical solvent(Mn^2 ) was studied.Compared with pure physical solvent of DMSO,the purification efficiency of the new absorbent was improved .And its absorption and reaction mechanism are discussed.     

改进铁氧体法去除污泥处理液中重金属的实验研究

利用改进铁氧体法，石灰乳做中和剂，实验研究了不同FeCl3/FeSO4初始浓度、pH值、FeCl，及FeSO4加入量（Fe^3＋／Mn^＋比值）、温度、反应时间等条件下，城市污泥用乙酸-双氧水淋溶处理液中铜、锌、铬、镍、镉、铅去除率。结果表明：在pH为9、反应温度为室温、反应时间为1h、FeCl，和FeSO4初始浓度分别为0．1mol／L和0．05mol／L；Fe^3＋／Mn^＋（Cu，Zn，Ni，Cr，Cd，Pd离子总和）=10的最佳工艺条件下，铜、锌、铬、镍、镉、铅去除率为94％，98％，86％，92％，89％，99％；处理后的液体中铜、锌、铬、镍、镉、铅含量达到安全排放标准。     

分析饮用水中五种卤代烃的顶空／气相色谱法验证

本文采用顶空／程序升温气相谱法快速分析饮用水中１．１－二氯乙烯，１．１．１．－三氯乙烷，１．１．２．－三氯乙烷，三溴甲烷１．１．２．２－四氯乙烷五种挥发性卤代烃，分离效果好，其相关系数均在０．９９以上，检出限分别为０．５０μｇ／ｌ．０．１０μｇ／ｌ。０．９８μｇ／ｌ，０．５６μｇ／ｌ，１．２０μｇ／ｌ，其回收率在８１．８％－１０２．７％之间，精密度在０．６２％－１２．１％之间。     

气相色谱法测定工业废水中4—硝基—2,6—二氯苯胺

采用气相色谱法测定工业废水中的4-硝基-2,6-二氯苯胺。研究了样品的提取、色谱分析条件及定量方法。测定了方法的精密度和准确度。以3倍的仪器噪声计算其检出限为4.8×10~(-11)g,进样量为2μL时,最低检出浓度为0.024mg/L,线性范围为0.04～2.0mg/L;精密度实验的变异系数为0.4％～1.7％;加标回收率为97.5％～99.0％。苯胺,对硝基苯胺,邻硝基苯胺,邻氯对硝基苯胺均不干扰测定。     

Determination of haloacetic acids in hospital effuent after chlorination by ion chromatography

The ion chromatography combined solid phase extraction (SPE) method was developed for the analysis of low concentration haloacetic acids (HAAs), a class of disinfection by-products formed from chlorination of hospital wastewater. The monitored HAAs included monochloroacetic acid, monobromoacetic acid, dichloroacetic acid, dibromoacetic acid and trichloroacetic acid. The method employed a sodium hydroxide eluent at a flow rate of 0.8 mlmin, electrolytically generated gradients, and suppressed conductivity detection. To analyze the HAAs in real hospital wastewater samples, C18 pretreatment cartridge was utilized to reduce samples' turbidity. Preconcentration with SPE and matrix elimination with treatment cartridges were investigated and found to be able to obtain acceptable detection limits. Linearity, repeatability and detection limits of the above method were evaluated. The detection limits of monobromoacetic acid and dibromoacetic acid were 2.61 μgL and 1.30 μgL, respectively, and the other three acids are ranging from 0.48 to 0.82 μgL under 25-fold preconcentration. When the above optimization procedure was applied to three hospital wastewater samples with different treatment processes in Tianjin, it was found that the dichloroacetic acid was the major compound, and the growth ratios of the HAAs after disinfection by sodium hypochlorite were 91.28%, 63.61% and 79.50%, respectively.     

蔬菜施用环保液体有机肥的效果

城市餐饮垃圾经发酵处理生成的环保液体有机肥,在蔬菜上使用效果显著,菜心增产比常规施肥增产22.5%~26.3%,青瓜增产5.0%~15.0%。环保液体有机肥可以替代常规肥料作蔬菜的追肥。     

气相色谱法快速测定蔬菜中灭杀毙

用蒸馏水一次提取新鲜蔬菜样品，以SE－30和QF－1为固定液，Chromosorb W AW DMCS为固定相，2m填充柱分离，氢火焰检测器检测，进样10uL测定灭杀毙含量，以保留时间定性，外标法定量，分析时间小于150s，方法回收率95．4％，相对标准差3．6％，可用作上市蔬菜灭杀毙农药残留量的快速测定。     

发生氢气分离离子色谱法间接测定水中硫化物

利用ＫＢＨ４在酸性条件下分解产生的氢气为载气分离水中硫化物，用ＮａＯＨ—Ｈ２Ｏ２溶液吸收Ｈ２Ｓ，并将其氧化为ＳＯ２－４，用离子色谱法测定ＳＯ２－４。方法用于各种水样中硫化物的测定，相对标准偏差为１．５８％，回收率在９０．５％到９８．２％之间。方法适用于水中硫化物的测定