结果表明,碱性亚硫酸钠法蒸煮脱木素率比较高(比NS法和HS法高,低于KP法)。
The results show that the delignification rate is higher for alkaline sulfite cooking (higher than NS and HS, lower than KP) .
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.
用连二亚硫酸钠还原法检测血浆中一氧化碳血(CO)的含量;
Plasma carbon monoxide (CO ) was detected according the method introduced by Chalmers.
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.
采用化学还原法处理含铬离子污水,焦亚硫酸钠作还原剂。
The method of chemical deoxidization was used to treat electroplating wastewater which contains chromium ions, and sodium pyrosulfite was used as reducing agency.
《食品安全法》严禁使用二氧化硫、亚硫酸钠和亚硫酸钾来处理生的畜肉和禽肉,违规经营场所和商家将被处以罚款。
The Food Standards Code does not allow the use of sulphur dioxide, and sodium and potassium sulphites in raw meat, poultry and game and businesses may be fined for using it.
方法原甲酸三乙酯与氰乙酸乙酯缩合,然后和羟乙基肼经环合、水解等一锅法合成5-氨基吡唑-4-甲酸,然后在亚硫酸钠存在条件下加热脱羧得到5-氨基-1-羟乙基吡唑。
METHODS 5-amino-1-hydroxyethyl pyrazole-4-carboylic acid was synthesized through condensation of ethyl cyanoacetate and triethyl orthoformate followed by one-pot methodology of cyclization, hydolysis.
方法原甲酸三乙酯与氰乙酸乙酯缩合,然后和羟乙基肼经环合、水解等一锅法合成5-氨基吡唑-4-甲酸,然后在亚硫酸钠存在条件下加热脱羧得到5-氨基-1-羟乙基吡唑。
METHODS 5-amino-1-hydroxyethyl pyrazole-4-carboylic acid was synthesized through condensation of ethyl cyanoacetate and triethyl orthoformate followed by one-pot methodology of cyclization, hydolysis.
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