离子色谱法测定煤中的全硫

一种利用离子色谱来简化传统的重量法测定煤中全硫 ,将煤样与艾氏卡试剂 (Mg O+ Na CO3)混合灼烧 ,使煤中各种形态的硫全部生成可溶性的硫酸盐 ,用离子色谱法测定。两次重复测定结果的精密度和准确度完全符合要求 ,测定标准煤样的结果与标准值之差在规定误差范围内。离子色谱法测定煤样的结果与重量法所得结果比较相对偏差在0 .3 6%～ 1 .45 %之间 ,又经统计检验后认定二者无显著性差异。     

Control strategy for sulfur dioxide and acid rain pollution in China

Ｃｈｉｎａ′ｓｅｃｏｎｏｍｙｈａｓｅｘｐａｎｄｅｄａｔａｎａｖｅｒａｇｅｏｆｏｖｅｒ 9%ｅａｃｈｙｅａｒｆｏｒｔｈｅｐａｓｔｔｗｏｄｅｃａｄｅｓ.Ｃｏｎｔｉｎｕｉｎｇｔｈｉｓｒａｐｉｄｅｃｏｎｏｍｉｃ ｇｒｏｗｔｈｗｈｉｌｅｓｉｍｕｌｔａｎｅｏｕｓｌｙｉｍｐｌｅｍｅｎｔｉｎｇｅｆｆｅｃｔｉｖｅ ｐｏｌｌｕｔｉｏｎｃｏｎｔｒｏｌｓｔｒａｔｅｇｙｐｒｅｓｅｎｔｓＣｈｉｎａｗｉｔｈａｎｕｒｇｅｎｔｃｈａｌｌｅｎｇｅ .1　Ｃｕｒｒｅｎｔｓｔａｔｕｓｏｆｓｕｌｆｕｒｄｉｏｘｉｄｅａｎｄａｃｉｄｒａｉｎｐｏｌｌ…     

Assessment of atmospheric sulfur with the epilithic moss Haplocladium microphyllum: Evidences from tissue sulfur and δS analysis

The application of geochemical signals in mosses is more and more popular to investigate the deposition of atmospheric pollutants, but it is unclear whether records of atmospheric sulfur in mosses differ between their diverse habitats. This study aimed to investigate the influence of growing condition on tissue sulfur and δ³⁴S of Haplocladium microphyllum. Epilithic and terricolous mosses in open fields, mosses under different canopy conditions were considered. We found that tissue sulfur and δ³⁴S of mosses under different habitats were not consistent and could not be compared for atmospheric sulfur research with each other even collected at the same site, moss sulfur and δ³⁴S records would be distorted by subsoil and upper canopies in different degrees, which possibly mislead the interpretation of atmospheric sulfur level and sources. Consequently, mosses on open rocks can be used reliably to assess atmospheric-derived sulfur in view of their identical sulfur and δ³⁴S evidences.     

锦州市2015年二氧化硫新增量预测

根据《“十二五”主要污染物总量控制规划编制技术指南》提供的公式,预测社会经济发展主要参数,包括GDP、能源消费总量、煤炭消费量等指标。二氧化硫新增量预测以宏观测算方法为主,并按行业测算方法予以校核。宏观测算分为火电行业和非电力行业,结果为1.419万t;分行业预测分为石化、建材（水泥）、有色、冶金和其他行业,结果为1.774万t,两者预测偏差为25%,采用分行业预测结果作为2015年二氧化硫新增量预测。     

安徽安庆铜矿床硫的来源及转换机制

安庆铜矿床的硫同位素组成复杂．不能用单一硫源或物理化学条件的变化来解释。本文依据区域成矿地质背景及矿床地质特征，研究了硫从硫源地质体转移到成矿热液中的六种可能机理（模型），并确定了矿床的硫源。     

型煤高温固硫终产物Ca－Fe－S－Si－O体系的表征

当型煤中适当加人添加剂硅、铁组分燃烧生成新的Ｃａ－Ｆｅ－Ｓ－Ｓｉ－Ｏ体系后，固硫率明显提高。本文用Ｘ射线粉末衍射法与Ｘ射线荧光光谱法对该体系的高温固硫终产物进行表征；分析了灰渣样品并讨论添加剂对固硫率的影响，为型煤工业配料寻求可靠依据。     

Coulometric determination of sulfur speciation in natural waters

Ｃｏｕｌｏｍｅｔｒｉｃｄｅｔｅｒｍｉｎａｔｉｏｎｏｆｓｕｌｆｕｒｓｐｅｃｉａｔｉｏｎｉｎｎａｔｕｒａｌｗａｔｅｒｓ￥ＬｉＹｕｘｉａｎ；ＺｅｎｇＹｕ；ＹａｎＨｕｉｙｕ（ＲｅｓｅａｒｃｈＣｅｎｔｅｒｆｏｒＥｃｏ－ＥｎｖｉｒｏｎｍｅｎｔａｌＳｃｉｅｎｃｅｓ...     

用稳定同位素方法探讨大气颗粒物中硫的来源

以五级撞击式大气颗粒物采样器采集贵阳城、郊大气颗粒物样品,分析了不同粒径大气颗粒物的全硫同位素组成,以此为基础,探讨了大气颗粒物中硫的来源,同时初步查明了贵阳城、郊大气颗粒物全硫同位素组成在时间和粒径上的变化趋势：（1）大气颗粒物的硫同位素组成变化范围随粒径变小而减小。说明伴随粒径变小,颗粒物中硫的来源趋向简单,硫越来越多地由气相硫转化而来。（2）春季样品各级颗粒物的δ₃₄S值有低于夏季的趋势。这反映出,燃煤排放的SO2通量与生物源硫化物通量在时间上的消长关系是控制颗粒物中硫的来源构成的一个重要因素。     

Malodor emission characteristics in rendering plants

Odor emission characteristics in rendering plant was studied by measuring 14 kinds of odorants in the emission gases from main processes: cooking of raw bone, concentrating of glue, refining of fat, and drying of bone. The odor from cooker had higher concentration of all odorous components compared with the other processes. From any process except the drying one, there were detected sulfur‐containing odorants in very high concentration. Of the odorants, concentrations of hydrogen sulfide and methyl mercaptan were higher. The odor from drying bed had comparatively low concentration of sulfur‐containing odorants, and higher concentration of ammonia and trimethylamine were detected. Lower fatty acids were detected from all processes though the concentrations were low. In the odorous gases taken at both the emission source and borderline side, high correlations were recognized between organoleptic test value and concentrations of measured odorants.     

大气二氧化硫质控图的探讨

通过对全程序空白与已知浓度二氧化硫标准溶液的对照分析，提出了大气二氧化硫分析中质控图的做法。