free sulfur

基本解释

The aim of this research was to decrease the residual of sulfur dioxide and control the release of free sulfur dioxide in malolactic fermentation.
本文研究目的是在发挥二氧化硫的作用下，尽量地减少其残留量和控制游离二氧化硫在苹果酸乳酸发酵中的释放。
Meanwhile, the removal of the free sulfur from the chalcopyrite will facilitate the ion diffusion and the further oxidative solution of chalcopyrite.
同时，清除黄铜矿表面氧化溶解产物——单体硫后，有助于离子扩散和黄铜矿的进一步氧化溶解。
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A new efficient catalyst, iodine-vanadic salts, was used in the synthesis of trabromophthalic anhydride at 125℃ with bromine in fuming sulfuric acid containing 20% free sulfur trioxide.
报道一种新的有效催化剂-碘-钒盐和在一定条件下合成四溴邻苯二甲酸酐的方法。