修正光度法测定痕量阳离子表面活性剂

阳离子表面活性剂与二甲酚橙在ｐＨ７～８的溶液中发生显色反应，用修正光度法处理，能消除空白干扰，提高分析灵敏度，该方法检出限为０．０８ｍｇ／Ｌ，线性范围０～１５ｍｇ／Ｌ，加标回收率９６％～１０２％，适于环境痕量分析。     

环境突发性事故采样的注意要点

根据环境突发性事故的特点，以作者工作经验，就事故采样的完整、典型，及时性以及样品保存４个方面，结合实例进行论述。     

洗车业污染现状及管理对策

城市洗车业存在水资源严重浪费，行业管理不到位导致水体污染等诸多问题，却没能引起有关部门重视。为此，针对洗车业存在的问题，以徐州市为例，从管理、技术、经济等多角度、多层面进行分析，提出了相应的建议和对策。     

污水处理中的计算机监控及无线数据传输

在分析大型污水处理厂计算机监控系统运行的基础上 ,从理论上分析了计算机监控、无线数据传输、无线网络的技术原理及抗干扰性、保密性。介绍部分工控产品及无线网络产品 ,以及在环保水处理及相关部门中的应用。     

大气中氨对农作物的影响

本文利用实验结论，阐述了大气中对农作物生长的影响及表现症状，分析了大气中不同浓度氨对农作物不同生长期的影响，对受氨污染地区农作物的种植选择及农业损失鉴定具有参考价值。     

加强工业污染防治 实现环保全面达标

对燕化公司开展环保全面达标工作做了综述和总结，几年的综合污染防治工作证明，加强环保管理、持续推行清洁生产和较先进的污染治理技术促进了燕化公司经济和生产的发展，同时降低了废物排放，取得了明显的效果。     

长江南通段污染带影响因素研究

通过建立应用贴体坐标系和有限体积法求解的二维水流－水质方程的模型，对潮汐河口南通段污染带的影响因素进行研究。揭示了水深、水面比降、纵向及横向混合系数以及污染物的排放时段与污染带范围的相关关系，并进行了各影响因素的灵敏度分析，对灵敏度大小进行了排序：水深＞水面比降＞横向混合系数＞纵向混合系数＞排放时段。     

Prenatal screening and diagnosis of neural tube defects in England and Wales in 1985

A survey was carried out to determine the effect of prenatal screening and therapeutic abortion on births in 1985 with anencephaly and spina bifida in England and Wales. Maternal serum alpha-fetoprotein tests were done on 399 288 women (60 per cent of pregnant women): 4 per cent were reported as being screen-positive and 1 per cent had an amniocentesis. An estimated 534 pregnancies associated with anencephaly were terminated and an estimated 445 pregnancies associated with spina bifida (but without anencephaly) were terminated. Most (63 per cent) of the anencephalic pregnancies were first suspected from an ultrasound examination; 57 per cent of the spina bifida pregnancies were first suspected from a positive maternal serum alpha-fetoprotein test, 35 per cent by ultrasound, and the remaining 8 per cent by other means. The birth prevalence of anencephaly declined by 94 per cent between 1964–1972 and 1985, but when the terminations of pregnancy on account of having a fetus with anencephaly are added to the births the decline in prevalence was only 50 per cent. The birth prevalence of spina bifida declined by 68 per cent over the same period but when the terminations were added to the births the decline in prevalence was only 32 per cent. Among births with anencephaly 66 per cent had had no screening or diagnostic tests in early pregnancy, but in those that did nearly all were positive–usually in twin pregnancies where one fetus was affected but not the other. Among births with spina bifida, 48 per cent had no tests and in those that did the results were mainly negative. We conclude that in order to monitor adequately the national screening programme for anencephaly and spina bifida a special neural tube defects register should be formed.     

石油石化企业环境工程设计的质量保证及其注意事项

简要论述了建立健全石油石化企业环境工程设计质量保证体系的必要性和重要性，以及由此涉及到的设计原则、设计方案、设计程序和设计规范等事项，指出了其中应注意的主要问题。     

沙尘天气对沈阳市空气质量的影响分析

针对沙尘天气的成因、来源及危害进行综述 ,对沈阳市 2 0 0 2年出现的沙尘天气特点及对空气质量影响进行了分析 ,提出几点防治对策