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1·About 80%, 97% of total impurities and sulfates and 60% of iron contained impurities were rejected by the membrane process.

膜分离对硫氰酸钠中的总杂质、硫酸根和含铁杂质的去除率约为80%，97%，60%。

2·The impurities affecting the index of UVT of phenol were found by GC MS analyses and total ketones analyses of phenol, which are mainly ketones compounds with higher boiling than of phenol.

通过对苯酚原料的GC—MS分析和对原料与产品的UVT及总酮量分析，定性地说明了影响UVT值达标的主要杂质为沸点高于苯酚的酮类化合物。

3·The results showed that all together 14 impurities were generated, including oxygen-containing compounds, alkynes, and organic acids, and their total actual recovery was 1.164%.

结果表明，生产的杂质包括含氧有机化合物、炔烃和有机酸计14种组分，总真实收率为1.164％；

4·The maximum content of single impurity was below 0.5% and the total content of impurities was no more than 0.6%.

氯氮平原料中单一最大杂质含量均在0.5%以下，且杂质的总量不超过0.6%。