At night our immunity of body falls down . virtually all cases of bad breath are caused by volatile sulfur compounds vscs 因?yàn)槿藗冊(cè)谕砩纤X(jué)時(shí),免疫功能下降,口腔內(nèi)細(xì)菌大量孳生所致。
Test method for determination of total volatile sulfur in gaseous hydrocarbons and liquefied petroleum gases by ultraviolet fluorescence 紫外線(xiàn)熒光測(cè)量法測(cè)定氣態(tài)烴和液化石油氣中揮發(fā)性硫總含量的試驗(yàn)方法
Standard test method for determination of total volatile sulfur in gaseous hydrocarbons and liquefied petroleum gases by ultraviolet fluorescence 紫外線(xiàn)熒光法測(cè)定氣態(tài)烴和液化石油氣中揮發(fā)性硫總量的標(biāo)準(zhǔn)試驗(yàn)方法