从含铜铋的炉渣中回收有价金属

本文采用硝酸，双氧水湿法分离某炉渣中的有价金属，火法捕集浸出渣中的金的新工艺。高效地回收了其中的各种有价金属，具有较高经济效益。     

利用pH值梯度研究建筑砂浆的酸蚀程度

在两种不同ｐＨ值模拟酸雨和３种浸泡时间条件下，据ｐＨ值梯度测定了各类保护剂处理建筑砂浆试件的酸化层厚度，从而判定保护剂的保护效果，了解酸蚀程度。并分析了影响酸化层厚度的因素。     

大连市中心区交通干线两侧噪声标准适用区域值的研究

结合大连市道路交通干线的分布及两侧建筑物群结构特点，通过大量的实地调查测量的数据统计处理，研究得出城市道路交通噪声的一般传播规律，为确定城市交通干线两侧标准适用区域值，提出了科学依据。     

功能区排放负荷污染系数百分比分配法研究

在考虑了总量控制区风频、风速和各功能区位置及污染源“影响范围”等影响因素的条件下，提出了“平均下风距离”的概念，从而建立了一种更为科学、合理的总量控制区内功能区排放负荷分配新方法。通过与 总量控制A值法所提出的面积分配方法相比较，验证了新方法的合理性和有效性。     

非线性时间序列门限自回归模型在环境空气质量预报中的应用

门限自回归模型作为1种利用历史资料对非线性时间序列进行描述从而进行预测的数学模型，多年来在各种统计领域中均取得良好的效果。根据非线性时间序列的门限自回归模型（简称TAR）的基本思路，利用环境空气自动监测系统历史监测数据资料，建立了浦东新区环境空气质量的预报计算模型。通过统计检验，检查使用TAR模型预测浦东新区环境空气质量与实际监测情况的符合程度。讨论了该模型在监测工作中的应用可行性。     

密切值法在地面水环境质量评价中的应用

论述了密切值评价法在环境质量评价中的应用原理和评价的方法与步骤 ,并结合工程项目的地面水环境质量评价 ,详细地计算了环境监测断面中主要污染因子的密切值 ,针对地面水各个断面的水质质量进行了综合评价。指出了该评价方法推广使用的优点与理论价值     

Elemental sulfur effects on Pb and Zn uptake by Indian mustard and winter wheat

A pot experiment was conducted to investigate the influence of elemental sulfur to contaminated soil on plant uptake by a heavy metal hyperaccumulator, Indian mustard( Brassica juncea ) and a field crop, winter wheat( Triticum. aestivum). Elemental sulfur(S) with different rates was carried out, they were 0(S0 ), 20(S20 ), 40(S40 ), 80(S80 ), and 160(S160 ) mmol/kg respectively. Extra pots with the same rates of S but without plants were used for soil sampling to monitor pH and CaCl2-extractable heavy metal changes. The results showed that S enhanced phytoextraction of Pb and Zn from contaminated soil. Application S effectively decreased soil pH down to 1.1 as the most at the rate of Sl60. The concentrations of CaCl2-extractable Pb and Zn in soil and uptake of Pb and Zn by the plants were increased with soil pH decreased. A good correlation between CaCl2-extractable Pb/Zn and soil pH was found( Rpb^2 = 0.847 and RZn^2 = 0,991, n = 25). With S application, soil CaCl2-extractable Pb and Zn concentrations, concentration of Pb and Zn in plants and the amount of removal by plant uptake were significanfly higher than those without S. Under the treatment of S160, the highest CaCl2-extmctable Pb and Zn were observed, they were 4.23 mg/kg and 0.40 mg/kg, 2.7 and 2.0 times as that of the control(So ) respectively. At the highest rates of S( Sl~0 ), both Indian mustard and winter wheat reached the highest uptake of Pb and Zn. The highest Pb concentrations in wheat and Indian mustard were 32.8 mg/kg and 537.0 mg/kg, all 1.8 times as that of the control, and the highest Zn concentrations in wheat and Indian mustard were 215.5 mg/kg and 404.0 mg/kg, 2.4 and 2.0 times as that of the control respectively. The highest removals of Pb and Zn from the contaminated soil were 0.41 rag/pot and 0.31 nag/pot by Indian mustard in the treatment of S160 through 50 days growth.     

降低总氮测定空白的方法改进

根据GB11894—89《水和废水监测分析方法》中水质总氮测定方法，发现空白值有增高现象，通过研究证明，氧化时间的长短、蒸馏水纯度的高低、碱性过硫酸钾存储时间的长短以及实验室环境等都会对总氮空白测定值有影响，文章对以上因素进行逐一分析和实验对比，明确了影响因素，提出了改进建议。     

测定空气SO2校准曲线斜率,试剂空白值影响因素的探讨

空气ＳＯ２的测定对实验测定条件比较敏感。通过实验，显色时间、显色温度、ＰＲＡ纯度、蒸馏水质量等试验条件均对其校准曲线有影响，所以在实验分析过程中，必须严格把握操作条件，严格遵循操作步骤。