粉末压片制样-波长色散X射线荧光光谱法测定卤水中的溴     

宋江涛  赵庆令 《岩矿测试》2011,30(4):494-496

选用人工合成标准样品校正溴的标准曲线,借助溴含量已知的土壤样品为载体吸附固化卤水,采用粉末压片制样-波长色散X射线荧光光谱法测定卤水中的溴含量。在国家一级土壤标准物质中添加不同含量的溴,建立标准化曲线,通过优化筛选仪器工作参数条件,改善了光谱干扰及基体干扰。方法的相对标准偏差(RSD,n=11)小于1.20%,测定结果与化学法测定值吻合,方法操作便捷,能够满足卤水样品中溴的快速定量分析要求。  相似文献   

Short‐ and Long‐Term Exposure to Heavy Metals Induced Oxidative Stress Response in Pseudokirchneriella subcapitata          下载免费PDF全文

Manuela D. Machado  Eduardo V. Soares 《洁净——土壤、空气、水》2016,44(11):1578-1583

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积分安培检测-离子色谱法同时测定地下水中的溴离子和碘离子     

张飞  ;韩翠杰 《火山地质与矿产》2014,(3):231-234

采用积分安培-离子色谱法同时测定地下水中的溴离子和碘离子,该方法的相关性好（ r＞0．999）,精密度高（RSD％＜4．0）,样品加标回收率为90～110％,溴离子检出限为5．6μg/L ,碘离子检出限为2．1μg/L。本法简便、快速、准确且选择性好,可用于分析地下水中的溴离子和碘离子。  相似文献   

Photooxidation Degradation of Reactive Brilliant Red K‐2BP in Aqueous Solution by Ultraviolet Radiation/Sodium Hypochlorite     

Qing‐Fu Zeng  Jie Fu  Yang Zhou  Yin‐Tao Shi  Hai‐Liang Zhu 《洁净——土壤、空气、水》2009,37(7):574-580

Photooxidation degradation of Reactive Brilliant Red K‐2BP (K‐2BP) aqueous solution by ultraviolet irradiation/sodium hypochlorite (UV/NaClO) was investigated. The effects of NaClO dosage, pH, temperature and initial dye concentrations were studied. A possible degradation pathway of K‐2BP was investigated. Acidic or neutral conditions were beneficial to the decolorization of K‐2BP aqueous solution. However, alkaline conditions facilitated chemical oxygen demand (COD) removal. Increasing the solution temperature from 20 to 50°C increased the removal of color and COD. However, at 60°C, the final percentage color and COD removal decreased by approximately 17 and 10%, respectively. Based on the products indentified and theoretical analysis, N=N cleavage and C‐N cleavage were possible initial steps in the degradation of K‐2BP. From the results of this work, we conclude that treatment of UV/NaClO is an efficient method to degrade K‐2BP in aqueous solution.  相似文献