“赛力奇”的致突变性研究

选用Ａｍｅｓ试验、小鼠骨髓细胞微核实验和小鼠显性致死突变试验对新型食品添加剂“赛力奇”的致突变性进行了检验。结果表明：三项试验的结果均生。根据国家《食品安全性毒理学评价程序（试行）》的规定，认为“赛力奇”无致突变性。     

煤沥青烟气对大鼠肺损伤及免疫功能的影响

采用自然吸入的暴露方法，通过分析肺灌洗液成分及脾脏淋巴细胞的转化功能，观察碳素厂冷压车间空气对大鼠肺损伤及免疫功能的影响，结果表明，在自然吸入染毒期间，引起大鼠肺灌洗液中乳酸氢酶、酸性磷酸酶和唾液含量或高，肺巨噬细胞及其Ｆｃ受体数降低，并且还引起脾脏淋巴细胞的转化能力下降。     

废水处理方案选择专家系统的设计

介绍了一种用于选择工业废水工艺流程方案的专家系统的设计。该系统采用框架式结构对知识进行描述，用指标函数方程进行各种费用的计算比较，最终得出最佳处理工艺流程方案。     

用浮游及底栖动物评价饮马河水质

根据浮游及底栖动物种群结构和数量分布特点，对秦皇岛市饮马河水质进行了初步评价，评价结果表明，生物监测技术方法可行，简单直观，与化学监测的结果基本一致。饮马河全程水质属于中-重污染。     

Effectiveness evaluation of water-sprinkling in controlling urban fugitive road dust based on TRAKER method: A case study in Baoding, China

Fugitive road dust (FRD) contributes a great deal to urban rainwater and air pollution and is commonly controlled by water-sprinkling in most Chinese cities. However, there is a lack of information on its effectiveness. We used the Testing Re-entrained Aerosol Kinetic Emissions from Roads (TRAKER) method to monitor different types of roads in Baoding city before and within 1 hr after water-sprinkling and obtained the road dirtiness index (a) and PM concentration in the road environment ($T_{\mathrm{T}}^{*}$), to evaluate the removal efficiency for PM deposited on the road surface (${\eta }_a$) and the reduction efficiency for the PM concentration in the road environment (${\eta }_{\text{PM}}$). The results give that the ${\eta }_a$ for three types of roads is ranked: branch road (87%-–100%) > major arterial road (80%-83%) > minor arterial road (68%-77%), and the ${\eta }_{\text{PM}}$ ranked: minor arterial road (70%) > branch road (46%-58%) > major arterial road (37%-53%). The ${\eta }_a$ and ${\eta }_{\text{PM}}$ varied non-linearly with time and presented a quadratic curve. The average effective control time (${\eta }_{\mathit{a}}$> 0) was 62 min on the major and minor arterial roads, and much longer than 1 hr on branch roads. The ${\eta }_{\text{PM}}$ values diminished completely by 72 min on average from the end of sprinkling for the three types of roads. Water-sprinkling can remove PM₁₀ particles from the road surface and reduce their concentration in the road environment more thoroughly than PM_2.5. Our findings could be helpful for controlling urban FRD emissions more efficiently and precisely.     

Simultaneous sorption of aqueous phenanthrene and phosphate onto bentonites modified with AlCl3 and CTMAB

The purpose of this work is to synthesize a new type of bentonite sorbent that can simultaneously remove both organic compounds and phosphate from water. Inorganic-organic bentonites (Al-CTMAB-Bent) were synthesized by modifying bentonites with both AlCl₃ and cetyltrimethyl ammonium bromide (CTMAB). Simultaneous sorption of aqueous phenanthrene and phosphate onto Al-CTMAB-Bent was examined. Removal rates of phenanthrene and phosphate from water reached 96.3% and 90.2%, respectively, at their respective initial concentrations of 1 mg/L and 5 mg/L and the added amount of Al-CTMAB-Bent was 1.25 g/L. The residual turbidity of the Al-CTMAB-Bent suspension decreased 81.4% compared to that of organobentonite suspension after a 1 h settling time. Thus, inorganic-organic bentonite can be used to treat wastewater containing both organic pollutants and phosphate. Translated from Environmental Science, 2006, 27(1): 91–94 [译自: 环境科学]     

Pollution survey of carbonyl compounds in train air

The train is an important vehicle in China, but its air quality has important impacts on passengers’ health. In this work, pollution from carbonyl compounds was measured in the air of six trains. The objectives of this work were to investigate carbonyl compound levels in selected air from trains, identify their emission sources, and assess the intake of carbonyl compounds for passengers. The methods for sampling and analyzing 10 carbonyl compounds such as formaldehyde, acetaldehyde, acrolein, acetone, propionaldehyde, crotonaldehyde, butyraldehyde, benzaldehyde, cyclohexanone, and valeraldehyde in indoor air were proposed with the sampling efficiency, recovery, and detection limit being 92%–100%, 91%–104%, and 0.26–0.82 ng/m³, respectively. It was indicated that the total concentrations of carbonyl compounds were 0.159–0.2828 mg/m³ with the average concentration of 0.2330 mg/m³. The average concentrations of form aldehyde, acetaldehyde and acetone were 0.0922, 0.0499, and 0.0580 mg/m³, accounting for 42.6%, 21.4%, and 24.9% of the total concentrations of carbonyl compounds, respectively. The carbonyl compounds probably came from woodwork and cigarette smoking. The intake of carbonyl compounds for the passengers was approximately 0.043–0.076 mg/h. The carbonyl compounds in train air could be harmful to human health. Translated from Environmental Science, 2006, 27(1) 91–94 [译自: 环境科学]     

复合混凝剂处理印染废水

为了处理高浓度、高色度、高COD的印染废水，利用硫酸亚铁、工业废酸和金属下脚料自行配制了复合混凝剂，并将其与聚合双酸铝铁、聚合氯化铝铁、硫酸亚铁对印染废水的混凝效果进行对比。研究表明，复合混凝剂处理印染废水具有成本低、效果好的特点。当硫酸亚铁的投加量为200mg/L，复合混凝剂的投加量为1280mg／L，PAM的用量为2mg／L时，脱色率达94．9％，COD去除率达78．1％，悬浮固体（SS）去除率达90．9％。     

硒酸钠和亚硒酸钠对长春花细胞悬浮生长的影响

研究了硒化合物对长春花(C.roseus)细胞悬浮生长的影响.在pH5.5培养介质中,当Se(Ⅵ)>0.5ppm或Se(Ⅳ)>0.6ppm时,将抑制C.roseus细胞悬浮生长,其致死浓度分别是100ppm Se(Ⅵ)和2.0ppm Se(Ⅳ).C.roseus对硒化合物有效强的富集作用.硒化合物的毒性和培养介质的pH值有关.在本试验条件下,硒酸钠和亚硒酸钠对Hg~(2+)无拮抗作用.     

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。