Møller M, Carlberg G E, Soteland N
Mutat Res. 1986 Nov;172(2):89-96. doi: 10.1016/0165-1218(86)90067-4.
Parameters influencing the mutagenic properties of spent bleaching liquors from sulphite pulps have been studied. In addition a comparison has been made between the properties of spent liquors from sulphite and kraft pulp bleaching. In the sulphite process the cooking base had no influence on the mutagenicity of the chlorination stage. In contrast, removing the extractives before chlorination especially for dissolving pulp resulted in an increase in mutagenic activity. The mutagenicity decreased significantly after substituting 40% of the chlorine with chlorine dioxide. Sequential addition of chlorine and chlorine dioxide resulted in higher activity than simultaneous or premixed chlorination as observed for liquors from kraft pulp. Increasing the pH of the extracts or addition of sulphur dioxide decreased the mutagenicity. Expressed as 10(7) revertants per kappa number and ton pulp the mutagenicity varied between 10 and 40 for sulphite pulp while the corresponding figures for kraft pulp were 100-225.
对影响亚硫酸盐纸浆漂白废液诱变特性的参数进行了研究。此外，还对亚硫酸盐和硫酸盐纸浆漂白废液的特性进行了比较。在亚硫酸盐法中，蒸煮碱对氯化阶段的致突变性没有影响。相反，在氯化之前去除提取物，特别是对于溶解浆，会导致诱变活性增加。用二氧化氯替代40%的氯后，致突变性显著降低。如对硫酸盐纸浆废液所观察到的，依次添加氯和二氧化氯比同时添加或预混合氯化具有更高的活性。提高提取物的pH值或添加二氧化硫会降低致突变性。以每κ值和每吨纸浆10⁷回复突变体表示，亚硫酸盐纸浆的致突变性在10至40之间变化，而硫酸盐纸浆的相应数字为100 - 225。
