Neonatal lung function following mid-trimester amniocentesis

Three hundred and fifty-four women who underwent midtrimester genetic amniocentesis were matched for age, parity, indication, and smoking history, with an equivalent number of women who had declined the procedure, for the purpose of comparing the neonatal respiratory status of their offspring. There was no evidence that the infants exposed to genetic amniocentesis were compromised.     

速灭菊酯在水稻-水-鱼系统中的动态

采用同位素示踪技术和模拟生态系统试验法,对水田施用速灭菊酯后对邻近水域的污染、水域中鱼类对速灭菊酯残留物的浓缩和排除等进行了研究,结果表明,在田表水中,残留物浓度随处理后时间而迅速降低。水系中淤泥对水中残留物有明显的吸附净化作用,鱼对水中速灭菊酯残留物的摄取和排除均很迅速。 用二室模型对速灭菊酯残留物在田表水中的消失、用一级输入和输出的单室模型对鱼体中残留物浓度随时间的变化动态研究表明,在田表水中,土壤对水中残留物起着强烈的吸附净化作用;在水系中,鱼体中残留物浓度的消长主要取决于残留物自身在水中的消失速率,只是在前期同时依赖于鱼体对残留物的排除效应,鱼体的摄入常数只对鱼体累积浓度最大值及到达最大值的时间T_m产生影响。     

铁屑微电解法预处理硝基氯苯生产废水的研究

研究了铁屑微电解法预处理某农药厂硝基氯苯生产废水。实验结果表明，铁屑微电解法可有效降低废水CODcr和色度，显著提高废水可生化性。废水经处理，CODcr去除率为73％，色度去除率达90％，BODs／CODcr从0．06提高到0．31。通过实验确定了最佳工艺条件,并探讨了各主要因素对处理效果的影响。另外，本文还分析了废水可生化性提高的原因。     

预处理的铜绿假单胞菌对Cu2+的生物吸附研究

从电镀废水污泥中分离，纯化获一高抗铜菌株，经鉴定为铜绿假单胞菌（Pseudomonas aeruginosa)，采用不同浓度盐酸对铜绿假单胞菌进行预处理，同时考察了不同因素如溶液的pH，温度，摇床转速，接触反应时间对未处理菌和预处理的影响，结果表明，经0．1NHCl预处理的菌体具有最佳吸附效果，pH、摇床转速对菌体的吸附具有较显著影响，温度对菌体吸附影响不大。     

水中酚类有机污染物HPLC分析及其应用

超声辐照技术降解水中有机污染物，其降解效率的主平价需要简单、快捷和精确的分析方法。为此研究了5种优先控制酚类污染物的HPLC分离及定量分析方法，方法的定量范围为0.4-100mg/L，检测限介于0.34-0.79ng/μL。4－氯酚的超声降解实验表明，随着反应溶液中4－氯酚初始浓度的降低，降解效率明显提高，因此该方法适用于超声降解过程中酚类污染物的跟踪测定。     

Recovery of heavy metals from electroplating sludge and stainless steel pickle waste liquid by ammonia leaching method

１　ＩｎｔｒｏｄｕｃｔｉｏｎＥｌｅｃｔｒｏｐｌａｔｉｎｇｓｌｕｄｇｅ，ｃｏｎｔａｉｎｉｎｇＣｕ，Ｎｉ，Ｚｎ，Ｃｒ，Ｆｅ，ｅｔｃ．，ｉｓｈａｒｍｆｕｌｗａｓｔｅｍａｔｅｒｉａｌｐｒｏｄｕｃｅｄｂｙｇａｌｖａｎｉｚａｔｉｏｎｉｎｄｕｓｔｒｙ．Ｔｈｅｒｅｉｓｓｔｉｌｌｎｏｅｆｆｅｃｔｉｖｅｍｅｔｈｏｄｔｏｒｅｃｏｖｅｒｒｅｓｏｕｒｃｅａｎｄｃｏｎｔｒｏｌｐｏｌｌｕｔｉｏｎｂｏｔｈａｔｈｏｍｅａｎｄａｂｒｏａｄ．Ｔｈｅｍｅｔａｌｓｄｉｓｃａｒｄｅｄｂｙｇａｌｖａｎｉｚａｔｉｏｎｉｎｄｕｓｔｒｙａｍｏｕｎ…     

小诺霉素发酵废水好氧生物处理试验研究

对具有强抑制性污染物的抗生素小诺霉素发酵废水，选择活性污泥、粉末活性炭（ＰＡＣＴ）、纯氧曝气等３种好氧生物处理法进行了比较试验。根据实验结果，小诺霉素发酵废水的生物降解呈抑制动力学，采用Ｍａｒｑｕａｒｔ方法对动力学模式进行参数估计。ＰＡＣＴ能够有效地降低降解过程中微生物受到的抑制作用，从而明显地改善了生物处理过程动力学。     

直接法测定大气中的非甲烷烃

介绍了在２个监测点，用直接法测定大气中的非甲烷烃。测定方法的检出限可达０．００６５ｍｇ／ｍ＾３，在线性范围０－１０ｍｇ／ｍ＾３时，线性相关系数为０．９９９５，相对标准焦虑差为２．８％。结果表明，由于大气逆温层、工业排放源、汽车排气对非甲烷烃的浓度变化产生影响，其日变化曲线呈双峰形。     

Adsorption selectivity of salicylic acid and 5-sulfosalicylic acid onto hypercrosslinked polymeric adsorbents

Both bottle-point and column-feeding experiments involving different solutes and sorbents were carried out to investigate the adsorption selectivity and separation performance of salicylic acid and 5-sulfosalicylic acid. Their adsorption isotherms onto such hypercrosslinked polymeric adsorbents as NDA-100 and NDA-99 could be well described by the Freundlich equations whose characteristics describe extrathermic and favorable adsorption processes. The adsorption towards NDA-100 mainly depended on the π-π interaction, while that towards NDA-99 was extremely influenced by the static-electric interaction. Additionally, the adsorptive capacity of salicylic acid on NDA-99 decreased while it increased on NDA-100 with the presence of 5-sulfosalicylic acid in the adsorptive environment as the competitive component. Comparatively, the adsorption capacity of 5-sulfosalicylic acid decreased on both resins with salicylic acid as the competitive component. In fact, the difference in the interaction between adsorbent and adsorbate resulted in the straight antagonism on the effective adsorption sites on the adsorbent. In conclusion, the adsorption selectivity of salicylic acid onto NDA-100 was obviously larger than that onto NDA-99 with the existence of 5-sulfosalicylic acid in the adsorptive environment. A satisfactory separation and recovery of tested solutes in aqueous phase could be foreseeably achieved by the sequencing adsorption technique involving NDA-100 as well as NDA-99. Translated from Environmental Pollution & Control, 2005, 27(8): 570–574 [译自: 环境污染与防治]