A comparison of three chemical analytical methods-gravimetric method of barbituric acid, hydroxylamine hydrochloride method and bro-mide-bromate method-for determination of furfural content was studied.

測定糠醛含量的方法很多狼友视频网址最新版，日前同際標(biāo)準(zhǔn)化組織和各國的糠醛標(biāo)準(zhǔn)檢驗(yàn)方法均采用化學(xué)法丝袜足交美腿，成品糠醛內(nèi)含有各種微量的有機(jī)雜質(zhì)国内外色呦色呦网站，據(jù)報(bào)道福利网在线观看。

In this paper,the authors compared extraction spectrophotometric method with gravimetric method in the determination of naphthenic acid in oil refining sewage,and found that the former method is better than the latter both in precision and operation.

討論了萃取分光光度法測定煉油污水中環(huán)烷酸含量的測定條件和干擾因素并與重量法進(jìn)行了比較亚洲国产精品永久在线，萃取分光光度法的精確度比重量法高而操作比重量法簡單黄色网站——18禁。

Six kinds of fruits, including grape, watermelon, pineapple, apple, orange, and carrot, which are commonly used for juice in Taiwan, were chosen for this study. Total dietary fiber, soluble dietary fiber, and insoluble dietary fiberwere measured by an enzymatic-gravimetric method.

膳食纖維分析法采enzymatic-gravimetric法，并分別測定總膳食纖維(Total dietary fiber操学生妹视频在线观看； TDF)国内自拍视频十二页、可溶性膳食纖維(Soluble dietary fiber； SFD)以及不可溶性膳食纖維(Insoluble dietary fiber日日插日日操； IDF)98视频在线免费观看。

gravimetric method：稱重法

使用分析天平稱量裝夾有試樣的透濕杯質(zhì)量的變化是稱重法(Gravimetric Method)的檢測機(jī)理. 由于水蒸氣相對透濕杯透過的方向不同,稱重法有增重法(Desiccant Method)和減重法(Water Method)兩種,它們的測試原理相同,但測試環(huán)境不同.

gravimetric method：重力勘探

gravimetric map 重力圖 | gravimetric method 重力勘探 | gravimetric network 重力測網(wǎng)

gravimetric method：重量分析法

gravimetric titration 重量滴定<法> | gravimetric method 重量分析法 | gravimetric factor 重量分析因數(shù)