云南曲靖地区铜的暴露与肺癌相关性研究

我国云南省曲靖的宣威和富源等地是全世界肺癌高发区,为了研究环境介质中铜(Cu)等重金属的暴露与体内分布特征,探讨Cu与肺癌的相关性,在当地开展肺癌环境流行病学调查,采集宣威和富源高发区人群饮食、饮水以及人体血浆和肺组织样品,微波消解ICP-MS法测定样品中Cu等元素.结果显示,当地居民使用燃料类型是影响肺癌高发的重要因素.高发区人群Cu的日摄入总量低于我国推荐的每日膳食中营养素供给量(RDA).肺癌组血液中Cu含量显著高于对照组,肺癌组织中Cu含量显著高于癌旁组织和正常组织,且肺癌患者的血浆和肺组织中Cu/Zn比值均升高.Pearson相关性分析结果表明,Cu和Ni、Cu和Pb呈显著正相关,提示在致癌作用上具有协同效应;Cu和Fe、Cu和Zn呈显著负相关,提示具有抑制或拮抗作用.多因素Logistic回归结果表明,Cu是肺癌发生的重要影响因素,人体中Cu含量和Cu/Zn比值可为肺癌的早期预防和诊断提供科学依据.     

Treatment of anthraquinone dye wastewater by hydrolytic acidification-aerobic process

Experiment on microbial degradation with two kinds of biological process, hydrolytic acidification-aerobic process and aerobic process was conducted to treat the anthraquinone dye wastewater with CODc, concentration of 400 mg/L and chroma 800. The experimental result demonstrated that the hydrolytic-aerobic process could raise the biodegradability of anthraquinone dye wastewater effectively. The effluent CODc, can reach 120-170 mg/L and chroma 150 which is superior to that from simple aerobic process.     

Bioavailability of bound residue derived from 14C-labeled chlorsulfuron in soil and its mechanism of phytotoxicity

The bioavailability of bound residue(BR) derived from ^14C-labeled chlorsulfuron in soil and effect of the main components of the BR on growth of rape( brassica napus) and rice( Oryza sativa L. ) were investigated. The results showed that the BR with the concentration of 0.28 and 0.56 nmol/g air-dried soil, which was calculated by special radioactivity of ^14C-labeled chlorsulfuron parent compound, resulted in significant depression effect on growth of rape seedling. It was assured that the main components(2-amino-4-methoxyl-6-methyl-1,3,5-triazine, 2-amino-4-hydroxyl-6-methyl-1,3,5-triazine, and 2-chloro-benzenesul-fonamide) of the BR did not inhibit the growth of rape and rice. LC-MS analysis demonstrated that the parent compound previously bound to the soil matrix could be again released and transformed into methanol-extractable residue during the course of rape growth. It was concluded that the molecular leading to the phytotoxicity to rape and rice in the BR is still the parent compound.     

重点污染行业实施环境管理体系绩效评价指标体系构建及应用

本文针对重点污染行业特点,从能资源消耗、综合利用、环境污染和社会反响四个方面构建了重点污染行业实施环境管理体系绩效评价指标体系,并以化工行业为研究对象,评估了14家企业体系实施前与实施后的绩效。结果表明,实施环境管理体系,有利于提高企业环境效益。     

安全评价辅助软件在液化石油气储存场所模糊综合评价方法中的运用

运用模糊综合评价方法的层次分析法对某液化石油气储存场所进行定性与定量相结合的安全评价,通过计算出评价指标体系的权重,用模糊综合评判方法对其进行安全度评判,以确定其安全等级（安全度）。利用Delphi软件编制的液化石油气储存场所安全评价系统软件,通过输入隶属度,借助此评价软件得出的评价结果,可以更加简洁、直观、迅速的得出被评价对象的优良程度。     

聚醚生产装置危险性分析

从物料分子结构与火灾爆炸性质、化学反应机理、热化学、工艺生产过程等学科逐层次对聚醚生产装置危险有害因素进行了定性分析;采用挪威DNV公司FHAST软件对环氧乙烷等泄漏事故后果进行了模拟;提出了聚醚生产装置安全对策建议措施。     

流动注射分光光度法测定水中痕量氟化物

研究并建立了测定水中痕量氟化物的氟试剂（ＡＬＣ）－流动注射分光光度法。将水样注入到水载流中,与ＡＬＣ－Ｌａ丙酮水溶液混合,在５０℃时反应生成蓝色三元络合物,在分光光度计上于波长６１８ｍｍ处进行检测。Ｆ＾－测定的线性范围为０．０４－３．０ｍｇ／Ｌ,检出限为０．０３６ｍｇ／Ｌ。     

Comparison of metabolome profiles in zebrafish (Danio rerio) intestine induced by polystyrene microplastics with different sizes

Environmental Science and Pollution Research - Microplastics (MPs) are widespread in aquatic environments. They could induce intestinal toxicity in the fish. However, research on the metabolic...     

Study on macro-meso mechanical properties of cemented tailings backfill with high fly ash content

Environmental Science and Pollution Research - The use of cement and fly ash (FA) to prepare cemented tailings backfill (CTB) lowers backfill mining costs while also reducing pollution caused by...     

Combined application of chemical fertilizer with green manure increased the stabilization of organic carbon in the organo-mineral complexes of paddy soil

Environmental Science and Pollution Research - The influence of the combined application of chemical fertilizer with green manure on the stabilization of organic carbon (C) was explored in the...