排序方式: 共有16条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
5.
采用固相萃取-气相色谱/质谱法测定水中硝基苯、硝基氯苯(间硝基氯苯、对硝基氯苯、邻硝基氯苯)、二硝基苯(对二硝基苯、间二硝基苯、邻二硝基苯)、2,4-二硝基甲苯、2,4-二硝基氯苯、2,4,6-三硝基甲苯等10种硝基苯类化合物,采用保留时间及全扫描定性,外标法定量,定性定量准确,线性相关性强,干扰小。该方法检出限为0.001~0.010μg/L,平均加标回收率在83.8%~97.2%之间,测定结果的RSD在1.2%~5.3%之间。 相似文献
6.
7.
建立了生活饮用水中氯苯类化合物和溴氰菊酯的气相色谱检测方法。该方法对1,3-二氯苯、1,4-二氯苯、1,2-二氯苯、1,3,5-三氯苯、1,2,4-三氯苯、1,2,3-三氯苯、1,2,3,5-四氯苯、1,2,4,5-四氯苯、1,2,3,4-四氯苯、五氯苯、六氯苯和溴氰菊酯的检出限分别为0.116,0.186,0.120,0.016,0.022,0.014,0.009,0.011,0.005,0.002,0.001和0.024μg/L,相对标准偏差为0.7%~3.2%,加标回收率为95%~105%。该方法可同时检测12种化合物,水样预处理简单,溶剂用量小,回收率高,精密度好且相互之间没有干扰。 相似文献
8.
9.
Two types of Sb-doped SnO2 films on titanium substrate were prepared by the combination of electro-deposition and dip-coating (Ti/SnO2-Sb2O4/SnO2-Sb2O4) and single dip-coating (Ti/SnO2-Sb2O4), respectively. The surface morphology and crystalline structure of both film electrodes were characterized using X-ray diffractometry(XRD) and scanning electron microscopy(SEM). XRD spectra indicate that the rutile SnO2 forms in two films and a TiO2 crystallite exists only in Ti/SnO2-Sb2O4 electrode. SEM images show that the surface morphology of two films is typically cracked-mud structure. The photooxidation experiment was proceeded to further confirm the two electrode activity. The results show that the photoelectrocatalytic degradation efficiency of Ti/SnO2-Sb2O4 electrode with sub-layer is higher than that of simple Ti/SnO2-Sb2O4 electrode using phenol as a model organic pollutant. The Ti/SnO2-Sb2O4/SnO2-Sb2O4 photoanode has a better photoelectrochemical performance than Ti/SnO2-Sb2O4 photoanode for the removal of organic pollutants from water. 相似文献
10.