采用电位滴定法改进了测定甲醛含量的中性亚硫酸钠法，并对其准确度和影响因素进行了探讨。
In this paper a potentiometric titration was used to improve the neutral sodium sulfite method for determining the content of formaldehyde, and the accuracy and influential factors were discussed.
对中性亚硫酸钠-蒽醌法杨木蒸煮废液(NS - L)和碱性亚硫酸钠-蒽醌法落叶松蒸煮废液(AS - L)做锌矿粉的成型粘合剂进行了研究。
Aspen neutral sulfite-anthraquinone pulping waste liquor (NS-L) and Larch alkaline sulfite-anthraquinone pulping waste liquor (AS-L) are used as the adhesive for the forming of zinc ore powder.
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