| 水体中总有机卤化物的测定 |
| 摘要点击 887 全文点击 1068 投稿时间：1995-01-07 |
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| 中文关键词 总有机卤化物(TOX) 挥发性有机卤(POX) 非挥发有机卤(NPOX) 高温热解分光光度法 |
| 英文关键词 purgeable organic halogen nonpurgeable organic halogen total organic halogen spectrophotometry |
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| 中文摘要 |
| 研究一种测定水体中总有机卤化物(TOX)含量的方法。分别通过气提和乙醚萃取并使用高温热解分光光度法测定挥发性有机卤(POX)和非挥发有机卤(NPOX)。方法检测限为lμmol/L,变异系数<3%,测得10种不同类型的模拟化合物的平均口收率为81%。自来水测定结果TOX为217-483μg/L。 |
| 英文摘要 |
| A modified determination method for TOX was described,whereby purgeable and nonpurgeable fractions were measured respectively. Purgeable organic halogen(POX) was stripped with a mixture of N2,and O2; and nonpurgeable organic halogen(NPOX) was enriched with a Liguidliquid Extraction (LLE) method. Both were introduced into a combustion system to change them into X-,which were then determined with spectrophotometry. There was a detection limit of about 1 μmol/L,a variation coeffcient of less than 3%,with an average recovery of 81% for 10 model. compounds. The TOX concentration in the tap water from Jiangsu province was from about 217 to 483 μg/L. |
