It mainly includes the new achievement of researches on iodometric method,spectrophotometry method,chemical-luminescence method, electrochemical method etc.

介紹了近年來國內(nèi)外的臭氧濃度檢測方法，主要包括碘量法亚洲欧美大码a在线观看、分光光度法特黄捆绑一级A片、化學發(fā)光法、電化學法等方面研究的新成果欧美男人天堂网。

The lower detection limit was 0.0006 mg/L Conclusion: Compared with the conventional isonicotinic acid 3-methy-1-pheny 1-5-pyrazolone spectrophotometry method, the advantages of the method are auto-sampling, rapid analysis speed and lower reagent consumption, etc.

與傳統(tǒng)異煙酸－吡唑啉酮分光光度法相比，該方法具有自動進樣欧美一级久久真人浪潮、分析速率快欧美高清在线视频看片在线观看免费、試劑耗量低等優(yōu)點，可應用于大批量常規(guī)地表水分析色哟哟影视基地。

Spectrophotometry was used to determine and extract the content of the flavanone from the leaves of Jasminum sambac Air.

目的為充分利用茉莉花葉植物資源a片在线观看哟哟哟，避免資源的浪費，探討茉莉花葉總黃酮的提取及鑒別方法456小视频。

The present studies developed a method of spectrophotometry for quantitative determination of the total concentration of Jasminum flavonoids. The result showed the optimal determination wavelength was 500nm.

研究確定了最佳檢測波長為500nm69免费视频，以蘆丁為標準品乐播三级黄三区视频免费，在100～800μg/mL范圍內(nèi)，濃度和吸光度呈良好的線性關(guān)系日本三级欧美三级人妇视频，回歸方程為A=0.0008C+0.0248国家aaaa级黄片，相關(guān)系數(shù)r=0.9999，回收率在96.5％～105％之間视色4se。

Results:There was no significant difference in mensuration between microwave disgestion-acetylacetone-formaldehyde spectrophotometry method and international standard Kjeldahl determination.

結(jié)果：微波消解-乙酰丙酮甲醛分光光度法與國標凱氏定氮法相比測定結(jié)果差異無顯著性欧美性爱欧美精品二区，該方法線性范圍在5~100μg/10 m l，相關(guān)系數(shù)r=0.99975566综合网，檢出限為0.546μg/10 m l国产美腿美女被操，相對標準偏差為1.29%~2.21%，加標回收率

Objective To establish a method of ultraviolet spectrophotometry to detect Konjak glucomannan in weight reducing heath food.

目的〕建立了紫外分光光度計法測定減肥保健品中魔芋葡甘露聚糖的檢測方法国产精品不卡一区。

The procedure of thin layer chromatography-spectrophotometry analysis of total triterpene in Lagerstroemia specious L.

采用薄層色譜分離-分光光度法測定大葉紫薇葉中的總?cè)坪俊?/p>

Methods The flavones were extracted by using ethanol as the solvent from Leonurus with ultrasonic wave and extraction method.A spectrophotometry was used to extract and check the flavones of Leonurus.The effect of Leonurus on scavenging of hydroxyl radicals was studied.

采用超聲波乙醇浸提法從益母草中提取黃酮類物質(zhì)爱福利视频广场一区二区，對所提取的黃酮類物質(zhì)進行驗證，并用分光光度法測定含量美女视频色网站国产，用益母草總黃酮對羥自由基清除作用進行試驗av高速在线网站。

MethodsDetermination of flavonoids in lithocarpus polysachyus rehd leaves by three-wavelength spectrophotometry.

方法采用三波長分光光度法測定多穗柯葉中黃酮含量。

Methods Total flavanone of Humunus Lupulus L. was extracted with ultrasonic wave technique. Its content was determined with spectrophotometry.

方法］采用超聲波技術(shù)輔助乙醇回流法提取啤酒花總黃酮亚洲色久悠悠A∨明星换脸，用分光光度法進行了含量測定黄色视频国产在线。