采用Fe2+/NaClO处理乐果废水的研究

研究了利用NaClO在酸性条件下生成的HClO代替Fenton试剂中的氧化剂H2O2,在Fe^2＋的作用下对乐果模拟废水进行处理。结果表明此方法处理乐果废水的效果比较明显。使用Fe^2＋／NaClO氧化处理乐果模拟废水,在pH值等于2,NaClO与FeSO4·7H2O的投加量分别为10mL/L,2．5g／L,振荡时间为30min,乐果初始质量浓度小于53mg／L时,乐果的处理率大于88．90％。     

Determination of alkali-labile phosphoprotein phosphorus from fish plasma using the Tb^3＋-tiron complex as a fluorescence probe

A sensitive method based on the fluorescence quenching effect of the Tb^3＋-Tiron complex is proposed for the determination of alkali-labile phosphoprotein phosphorus （ALP） released from fish plasma. The detection limit was 5.4 ng/ml （S/N=2）, and the relative standard deviation of the quenching effect （6 replicates） was 4.6%. The results obtained by the proposed method were in good agreement with those obtained by the colorimetric assay. The advantages of the present method are its relatively simple detection procedure, the lack of toxic organic solvents, and high sensitivity.     

电气石超细粉体对废水中Zn^2＋离子吸附的研究

根据国内外学者对电气石在环境保护方面的研究和应用，本研究中选用内蒙古赤峰地区天然电气石为原料，加工成电气石超细粉体，用于对Zn^2 离子的吸附试验，分析总结了电气石对重金属的吸附机理。以期能为电气石在环境保护领域的应用开辟新的途径。     

示波极谱滴定法测定工业废水中的氰化物

在ｐＨ为１０３的氯化铵氨水底液中,使氰化物与Ｎｉ２＋离子形成稳定物〔Ｎｉ（ＣＮ）４〕２－络离子,过量的Ｎｉ２＋离子用标准ＥＤＴＡ溶液返滴,以Ｎｉ２＋离子在交流示波极谱图上的切口消失指示滴定终点,废水的色度、浊度等对测定不产生干扰,无须进行预蒸馏处理,操作简便,快速。方法的相对偏差小于１０％,变异系数小于０７％,水样的加标收率为９６～１０７％。     

网状聚合物冠醚对重金属离子的吸附性能

以Hg（NO3）2、Cu（NO3）2水溶液为模拟工业废水，以侧链具N、S配位基的网状聚合物冠醚为吸附剂，研究了聚合物冠醚对HP(2＋)、Cu(2＋)的吸附性能。讨论了溶液温度、pH值、金属离子浓度及时间对吸附性能的影响，该聚合物冠醚对Hg(2＋)具有较高的吸附容量和较快的吸附速度。     

含铬固体废渣中Cr~(3+) 的氧化

研究了ｐＨ、温度对铬渣中Ｃｒ３＋的氧化速率的影响．结果表明，在碱性条件下，空气中的氧气具有相当强的氧化性，足以将Ｃｒ３＋氧化为Ｃｒ６＋，且随ｐＨ、温度的升高而加快．     

镀铬废水的活性碳法处理试验研究

针对镀铬车间废水，采用活性碳吸附处理法对Cr^6 和Cr^3 的去除效果进行了系统的试验。通过微型反应柱集成装置对穿透时间、吸附容量及活性碳再生方法进行了研究，动态试验表明该方法能有效地处理含铬废水。     

利用克氏螯虾触角电位监测水体Hg2+污染的研究

随着工业的发展,水体污染日趋严重。一定量的重金属对生物体和人体的生理生化功能具有多方面的毒性作用。水环境中高浓度的Hg²⁺对生物的危害极大,无机汞中又以HgCl₂为最。在水污染生物监测的研究领域内,国外已有用螯虾作为实验动物的报道。然而,迄今尚未见有Hg²⁺影响淡水螯虾触角感觉功能的报道。     

Effects of salinity on activities of H+-ATPase, H+-PPase and membrane lipid composition in plasma membrane and tonoplast vesicles isolated from soybean (Glycine max L.) seedlings

The effects of NaCI stress on the H^＋-ATPase, H^＋-PPase activity and lipid composition of plasma membrane(PM) and tonoplast(TP) vesicles isolated from roots and leaves of two soybean cultivars( Glycine max L. ) differing in salt tolerance(Wenfeng^7,salt-tolerant; Union, salt-sensitive) were investigated. When Wenfeng^7 was treated with 0.3% (W/V) NaCI for 3 d, the H^＋ -ATP aseactivities in PM and TP from roots and leaves exhibited a reduction and an enhancement, respectively. The H^＋ -PPase activity in TP from roots also increased. Similar effects were not observed in roots of Union. In addition, the increases of phospholipid content and ratios of phospholipid to galactolipid in PM and TP from roots and leaves of Wenfeng^7 may also change membrane permeability and hence affect salt tolerance.     

石墨炉原子吸收法测定污水中溶解的Cr^＋3和Cr^＋6

本文采用在０．４５μｍ滤膜过滤后的水样中加Ｍｇ（ＮＯ３）２作为基体改进剂，测定溶解的总Ｃｒ；另取过滤后的水样在ＰＨ４．５的醋酸盐缓冲液中以ＡＰＤＣ０－ＭＩＢＫ萃取测定溶解的Ｃｒ＾＿６，并用差减法求出溶解的Ｃｒ＾＋３，总Ｃｒ与Ｃｒ＾＋６的检出限分别为０；７１和０．６９μｇ／Ｌ。