酞酸酯类有机毒物在土壤中降解规律的研究

研究了酞酸酯ＤＥＨＰ和ＤＢＦ二种增塑剂在土壤中降解规律，结果表明：土壤中ＤＥＨＰ和ＤＢＰ的降解速率可以用一级动力学方程描述，不同类型土壤对酞酸酯的降解能力是有所差别的，ＤＢＰ在土壤中比ＤＥＨＰ容易降解，土壤灭菌后，降解能力明显降低，按种接解微生物后，土壤中ＤＥＨＰ降解速率明显加快，土壤含水量和温度影响ＤＥＨＰ和ＤＢＰ的降解速率；本试验从土壤中分离出降解ＤＥＨＰ的细菌９株和真菌１１株。     

四种南京地产栽培野菜蛋白质营养价值的评价研究

4种传统野菜已在南京地区规模栽培利用。采用模糊识别法和氨基酸比值系数法,分别以鸡蛋蛋白质为标准蛋白 ,以WHO/FAO氨基酸参考模式为评价标准 ,对这4种野菜蛋白质营养价值进行了评价 ,并与6种常见蔬菜蛋白进行对照比较。结果表明 ,4种野菜蛋白质含量为2.3 %～5.0 % ,蛋白质中氨基酸种类齐全 ,其含量为77.73 %～89.36 % ,必需氨基酸占总氨基酸量的36.72 %～42.04 % ,第一限制性氨基酸为含硫氨基酸 (Met +Cys)。其蛋白质营养价值分别优于同科的一些常见蔬菜。     

近地面降雨过程研究——模拟和因素分析

用模型和模拟实验方法研究了近地面降雨过程中SO_2和颗粒物洗入对雨水pH值的影响。探讨了几个主要因素与雨水最终pH值的关系,并对我国六个城市大气颗粒物的缓冲性能进行了初步研究。     

硫酸净化工序的改造及稀酸的利用

硫酸净化工序污水或稀酸中，不仅含有硫酸和大量的矿尘，而且还含有的砷、氟等有害物质，采用半封闭酸洗流程，可减少排污和中和量，回收利用稀酸，稳定达标排污，有着明显的企业经济效益和社会经济效益。水洗流程改为半封闭酸洗流程，投资少，工期短，见效快，对现在仍然采用水洗流程的中小硫酸装置具有借鉴作用。     

Effect of noise exposure (85 dB ) on testicular adrenocortical steroidogenic key enzymes, acid and alkaline phosphatase activities of sex organs in mature albino rats

ＩｎｔｒｏｄｕｃｔｉｏｎＦｏｒｌａｓｔｔｗｏｄｅｃａｄｅｓ,ａｗａｖｅｏｆｔｈｅｅｘｐｅｒｉｍｅｎｔａｌｃｏｎｓｃｉｏｕｓｎｅｓｓｉｓｂｅｉｎｇｄｅｖｅｌｏｐｅｄｉｎｄｅｖｅｌｏｐｉｎｇｃｏｕｎｔｒｉｅｓｉｎｃｌｕｄｉｎｇＩｎｄｉａ.Ｍｏｄｅｒｎｔｅｃｈｎｏｌｏｇｙｈａｖｅｂｅｅｎｃｒｅａｔｅｄｅｎｖｉｒｏｎｍｅｎｔａｌｐｏｌｌｕｔａｎｔ,ｏｆｗｈｉｃｈｎｏｉｓｅｉｓｃｏｎｓｉｄｅｒｅｄａｓｔｈｅｗｏｒｓｔｅｎｅｍｙｏｆｈｕｍａｎｈｅａｌｔｈａｎｄａｃｕｒｓｅｏｆｏｕｒｓｏｃｉｅｔｙ .Ｎｏｉｓｅｉ…     

酸性溶液中铝-氟反应动力学

研究了酸性溶液中铝氟反应的动力学，结果表明，铝氟之间的反应速率随温度和ｐＨ的升高而增加．低ｐＨ下以Ａｌ３＋＋Ｆ－＝ＡｌＦ２＋反应为主，较高ｐＨ下由于ＡｌＯＨ２＋参与反应及ＯＨ－的催化作用，反应速率加快．在铝的浓度比氟过量１０倍的情况下，铝氟之间的反应可以用一级反应动力学方程来拟合，即为假一级反应．当ｐＨ＜３８时，柠檬酸和草酸的存在使反应速度加快，而当ｐＨ＞３８时，有机酸使铝氟反应速度变慢．有机酸在不同的ｐＨ下存在不同的作用机制．     

Effects of simulated acid rain on cation releasing in soils of South China

ＥｆｅｃｔｓｏｆｓｉｍｕｌａｔｅｄａｃｉｄｒａｉｎｏｎｃａｔｉｏｎｒｅｌｅａｓｉｎｇｉｎｓｏｉｌｓｏｆＳｏｕｔｈＣｈｉｎａＷｕＱｉｎｇ，ＱｉｕＲｏｎｇｌｉａｎｇ，ＬｕＹｕｅｎａＤｅｐａｒｔｍｅｎｔｏｆＥｎｖｉｒｏｎｍｅｎｔａｌＳｃｉｅｎｃｅ，Ｚ...     

Adsorption-desorption behavior of acetochlor to soils in the presence of some environmental substances

ＩｎｔｒｏｄｕｃｔｉｏｎＡｌｔｈｏｕｇｈｔｈｅｈｅｒｂｉｃｉｄｅａｃｅｔｏｃｈｌｏｒ [2 ｃｈｌｏｒｏ Ｎ (ｅｔｈｏｘｙｍｅｔｈｙｌ) Ｎ (2 ｅｔｈｙｌ 6 ｍｅｔｈｙｌｐｈｅｎｙｌ)ａｃｅｔａｍｉｄｅ]ｈａｓｂｅｅｎｕｓｅｄｆｏｒｔｅｎｙｅａｒｓｉｎＣｈｉｎａ,ｌｉｍｉｔｅｄｉｎｆｏｒｍａｔｉｏｎｈａｓｂｅｅｎｃｏｌｌｅｃｔｅｄｔｏｄｅｔｅｒｍｉｎｅｉｔｓｆａｔｅａｎｄｔｒａｎｓｐｏｒｔｉｎｔｈｅｅｎｖｉｒｏｎｍｅｎｔ.Ｆｏｒｍｕｌａｔｉｏｎｓａｒｅｇｅｎｅｒａｌｌｙｓｏｌｄａｓｅｍｕｌｓｉｆｉａｂｌ…     

A theoretical study of hydrogen-bonded molecular clusters of sulfuric acid and organic acids with amides

Amides, a series of significant atmospheric nitrogen-containing volatile organic compounds (VOCs), can participate in new particle formation (NPF) throught interacting with sulfuric acid (SA) and organic acids. In this study, we investigated the molecular interactions of formamide (FA), acetamide (AA), N-methylformamide (MF), propanamide (PA), N-methylacetamide (MA), and N,N-dimethylformamide (DMF) with SA, acetic acid (HAC), propanoic acid (PAC), oxalic acid (OA), and malonic acid (MOA). Global minimum of clusters were obtained through the association of the artificial bee colony (ABC) algorithm and density functional theory (DFT) calculations. The conformational analysis, thermochemical analysis, frequency analysis, and topological analysis were conducted to determine the interactions of hydrogen-bonded molecular clusters. The heterodimers formed a hepta or octa membered ring through four different types of hydrogen bonds, and the strength of the bonds are ranked in the following order: SOH???O > COH???O > NH???O > CH???O. We also evaluated the stability of the clusters and found that the stabilization effect of amides with SA is weaker than that of amines with SA but stronger than that of ammonia (NH₃) with SA in the dimer formation of nucleation process. Additionally, the nucleation capacity of SA with amides is greater than that of organic acids with amides.