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苯胺蓝脱色放线菌的分离及脱除特性研究 总被引:1,自引:0,他引:1
通过苯胺蓝平板法从陕西秦岭森林高度腐殖化土壤中分离得到一株具有高度碳源利用多样性放线菌AG-56,经16S r RNA鉴定为链霉菌属(Streptomyces),命名为Streptomyces AG-56,Gen Bank登录号KU925845.同时,考察了Streptomyces AG-56在液体条件下对苯胺蓝的降解能力.结果显示,菌株AG-56对苯胺蓝的3个波长(602、314、192 nm)吸收基团都具有不同程度的降解能力,并伴有物理吸附作用,其中对602 nm处基团具有最大的脱除能力,脱除率为72%.菌株AG-56在污水脱色方面特别是对三芳基甲烷类染料废水处理方面展现出了巨大的应用潜能. 相似文献
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水和废水中苯胺测定方法改进及分析质量控制 总被引:2,自引:0,他引:2
在水和废水中苯胺的现行测定方法基础上,以0.05mol/LH2SO4代替固体硫酸氢钾进行酸度调节,并通过标准样品及实际样品的分析,试验了改进的方法,此种改进简化了分析程序,提高了分析效率,在大量实验基础上,建立空白试验,准确度质量控制图,以期对定期例行监测及大批调查分析提供可行的质量保证措施。 相似文献
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采用便携式GC-MS测定水体中的苯胺,并对水样中离子强度和顶空分析的平衡时间进行优化。试验表明,苯胺在10.0μg/L~200μg/L范围内有较好的线性,r为0.998;方法检出限为5.8μg/L;回收率为92.8%~96.7%;RSD为3.2%~8.6%。用54种VOCs混合标样对苯胺标液进行干扰试验,结果试验条件下苯胺与VOCs得到有效分离。 相似文献
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固相萃取-高效液相色谱法同时测定饮用水中苯胺和联苯胺 总被引:3,自引:0,他引:3
用Waters Oasis MCX固相萃取小柱富集水中的苯胺和联苯胺,以2%氨水-甲醇混合溶液为洗脱液,采用高效液相色谱法DAD检测器在285 nm波长下测定。苯胺和联苯胺分别在0 mg/L~100 mg/L和0 mg/L~10.0 mg/L范围内线性良好,检出限分别为0.3 μg/L和0.1 μg/L,饮用水加标平行测定6次的RSD分别为0.9%和0.3%,回收率分别为98.3%~99.1%和97.6%~102%。 相似文献
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气相色谱/质谱联用法测定饮用水源水中苯胺类化合物 总被引:3,自引:0,他引:3
采用液液萃取-气相色谱/质谱联用法测定饮用水源水中19种苯胺类化合物,选择DB-5MS色谱柱,讨论了pH值对回收率的影响.方法在0.500 mg/L~5.00 mg/L范围内线性良好,19种苯胺类化合物的检出限为0.016μg/L~0.067 μg/L,标准溶液平行测定的RSD为1.2% -13.2%,实际样品加标回收... 相似文献
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A novel strategy utilizing the phenyls interaction and the hydrophobic affinity of available siloxane surface in the interlayer of bentonite was proposed to improve the sorption capabilities of organobentonites for water soluble aromatic contaminants. A unique organobentonite (65BTMA) was synthesized by intercalating benzyltrimethylammonium cation (BTMA+) into the interlayer of a reduced-charge bentonite with cation exchange capacity (CEC) of 65 cmol kg−1. Phenol, aniline and toluene were used as model compounds of water soluble aromatic contaminants. Their respective removal efficiencies by 65BTMA were achieved at 83.3%, 89.2% and 97.3% at the initial concentration of 20 mg l−1. To reveal the sorption mechanism, sorption characteristics of aromatic contaminants to 65BTMA were compared with that of aliphatic contaminants in similar molecular size. And various organobentonites were prepared by combining TMA+ (tetramethylammonium), BTMA+, HTMA+ (heptyltrimethylammonium) and CTMA+ (cetyltrimethylammonium) with two bentonites (CEC = 108 and 65 cmol kg−1). To 65BTMA, sorption magnitudes of aromatic contaminants were much greater than that of aliphatic compounds with similar size; and dramatically higher than those to other organobentonites at low pollutant concentrations. These observations revealed that the strong phenyls interactions contributed significantly to sorb the aqueous soluble aromatic contaminants to 65BTMA (>90%), and which favored to design uniquely powerful sorbents. 相似文献