饮水中二溴乙酸诱导细胞恶性转化试验

为探讨氯化消毒副产物二溴乙酸的致癌性及其可能的致癌机制,使用NIH3T3细胞进行 了恶性转化试验,并用刀豆蛋白A凝集试验验证细胞恶性特征,用流式细胞仪对转化后细胞进 行了细胞周期时相分析.结果表明,二溴乙酸能导致细胞恶性转化,转化细胞能引起低浓度刀 豆蛋白A凝集,细胞周期出现G2/M期阻滞.可见二溴乙酸具有潜在致癌性,有必要对其进行进一 步研究.

Study on Influence of Gasoline Sulfur Content on Performance of Vehicle Exhaust Catalytic Converter

This paper has investigated the influence of gasoline sulfur content on durability of catalytic converter for vehicle exhaust gas. Two gasoline samples with different sulfur contents (equating to 150 μg/g and 50 μg/g of sulfur, respectively) were used to examine the durability and performance of catalytic converter on the bench test. The test results have revealed that in comparison to the influence of sulfur on ageing of catalytic converter the thermal ageing had a more remarkable impact on the performance of catalytic converter, and the performance of catalytic converter could be restored by high-temperature desulfurization process after ageing by the high-sulfur gasoline sample (containing 150 μg/g of sulfur) .