小洁和公h文翁17,337p粉嫩日本欧洲亚洲福利 ,日本少女漫画,经典肥岳短篇系列小说推荐

服務(wù)熱線

021-50276769
網(wǎng)站導(dǎo)航
技術(shù)文章
當(dāng)前位置:主頁(yè) > 技術(shù)文章 > 論工具的重要性——看同行是如何利用HT2800Tfa論文的

論工具的重要性——看同行是如何利用HT2800Tfa論文的

更新時(shí)間:2022-07-18 點(diǎn)擊次數(shù):1235

Hello小伙伴大家好,今天我們來(lái)聊聊工具的重要性。《論語(yǔ)·衛(wèi)靈公》中有“工欲善其事必先利其器"的說(shuō)法,我們現(xiàn)在常說(shuō)的巧婦難為無(wú)米之炊引申自陸游《老學(xué)庵筆記》卷三:“僧曰:巧婦安能作無(wú)面湯餅乎?"??梢?jiàn)工具的重要性,儀器設(shè)備對(duì)于科研及質(zhì)檢人員來(lái)說(shuō)是尤為重要的,有好的儀器設(shè)備不一定能發(fā)高分論文,但沒(méi)有儀器設(shè)備沒(méi)有實(shí)驗(yàn)數(shù)據(jù)支撐,一定發(fā)不了高分論文,做一個(gè)“裝備控"是非常有必要的。


HT2800T是意大利HTA公司研發(fā)生產(chǎn)的一款多功能氣相色譜自動(dòng)進(jìn)樣器,可以與眾多進(jìn)口品牌的GC或GCMS聯(lián)用,實(shí)現(xiàn)操作的自動(dòng)化升級(jí),完成液體進(jìn)樣、頂空進(jìn)樣及SPME固相微萃取進(jìn)樣,滿足您的實(shí)驗(yàn)不同應(yīng)用需求。


微信截圖_20220718090155.png

簡(jiǎn)潔的操作,清晰的觸摸屏,安裝方便不同應(yīng)用模式切換僅需5min,不同儀器之間拆裝也僅需5min。 


用事實(shí)說(shuō)話,看“歪果仁"是如何利用HT2800T搞科研fa論文的。

應(yīng)用一:《用金屬氧化物氣體傳感器S3裝置鑒別特級(jí)初榨橄欖油的質(zhì)量和地理來(lái)源》

特級(jí)初榨橄欖油(EVOO)因其價(jià)格昂貴、營(yíng)養(yǎng)價(jià)值高,是最常見(jiàn)的摻假食品之一,歐盟也出臺(tái)了一項(xiàng)立法,以維護(hù)一些與生產(chǎn)區(qū)域有關(guān)的EVOOs商標(biāo),因此,監(jiān)測(cè)和確保EVOO的質(zhì)量和地理來(lái)源很重要。利用HT2800T頂空模式與氣相色譜儀聯(lián)用,結(jié)合其他金屬傳感器系統(tǒng)完成初榨橄欖油的色譜分析及在線檢測(cè),根據(jù)所得結(jié)果判斷EVOO的質(zhì)量及地理來(lái)源。

涉及進(jìn)樣及色譜方法原文如下:

下滑查看全文?

The complex set of data acquired from the S3 sensors response to the volatile organic compounds originating from the EVOO headspace were analyzed through a m*riate analysis PCA and ANN. The measurements were performed in an autosampler HT2800T (HTA srl, Brescia, Italy) . For this, 5mL of olive oil samples were enclosed in 20mL vials and placed randomly in the autosampler. The sample headspace was drawn out from the vial and injected at 1mL/min into a chromatographic air flow (50 sccm). The injection time was 2min and the recovery time was 5min.

微信截圖_20220718090350.png
微信截圖_20220718090356.png




應(yīng)用二:《蘋(píng)果酒的品質(zhì)取決于必需無(wú)機(jī)鹽》

在發(fā)酵前向酵母中添加適量的無(wú)機(jī)鹽有助于促進(jìn)酵母的生長(zhǎng)改進(jìn)整個(gè)工藝流程,使得產(chǎn)品質(zhì)量更高,為了評(píng)估蘋(píng)果酒必須補(bǔ)充無(wú)機(jī)鹽(NH4)2SO4, MgSO4,(NH4)3PO4對(duì)釀酒參數(shù)、抗氧化活性、總多酚含量的影響用各種酵母菌株發(fā)酵的揮發(fā)性蘋(píng)果酒化合物。文中檢測(cè)揮發(fā)性有機(jī)物使用了PE的氣相色譜與HTA的HT2800T,SPME進(jìn)樣模式。

涉及進(jìn)樣及色譜方法原文如下:

下滑查看全文?

Analysis of Volatile Compounds

A sample of 2mL was placed into a 15-mL headspace vial, and 50µL of internal standard solution (5mg/L of ethyl nonanoate) was added. Then, the SPME (solid-phase microextraction) fiber (85µm Carboxen Polydime thylsiloxane, Supelco, St. Louis, MO, USA) was placed in the headspace above the sample, and the vial was incubated for 30min at 40℃. The fiber was subjected to thermal desorption in a gas chromatograph injector at 250℃.

The chromatographic separation was carried out on a Clarus 580 apparatus (PerkinElmer, Waltham,MA, USA) and a Crossbond dimethyl polysiloxane 60 m, 0.25mm, 1.4µm film thickness column. The carrier gas flow (He) was 2mL/min, with the following

temperature program: 35℃, 6min;8℃/min up to 180℃; 12℃/min up to220℃; 25min. The detector and dispenser temperature was 250℃. An HT2800T autosampler (HTA Brescia, Italy) was used,and PerkinElmer Total Chrom 6.3.2 software (PerkinElmer, Waltham, MA, USA) was used to integrate the results.




應(yīng)用三:《在蘋(píng)果酒生產(chǎn)的不同階段必需氧對(duì)釀酒參數(shù)、抗氧化活性和揮發(fā)性化合物的影響》

微氧作用可能會(huì)影響成品酒jing飲料的質(zhì)量,不同發(fā)酵階段的微氧作用對(duì)不同酵母菌株發(fā)酵的揮發(fā)性蘋(píng)果酒的釀造參數(shù)、抗氧化活性、總多酚含量影響不同。經(jīng)微氧處理的蘋(píng)果酒提取物濃度較高,酸度較高,效力較低。必須氧化在發(fā)酵過(guò)程中降低了揮發(fā)性成分的濃度。發(fā)酵過(guò)程中必須菌的氧化作用對(duì)蘋(píng)果酒中萜類化合物的濃度有不同程度的影響。文中檢測(cè)揮發(fā)性物質(zhì)同樣也是利用了HT2800T的SPME進(jìn)樣模式。

涉及進(jìn)樣及色譜方法原文如下:

下滑查看全文?

Analysis of Volatile Compounds

The volatile compounds were determined using a modified Grützman et al. method. A sample of 2mL was placed into a 15mL headspace vial, and 50µL of an internal standard solution (5mg/L of ethyl nonanoate) was added. Then a solid-phase microextraction (SPME) fiber was placed in the headspace above the sample, and the vial was incubated for 30 minutes at 40℃. The fiber was subjected to thermal desorption in a gas chromatographic injector at 250℃.

The chromatographic separation was carried out on a Clarus 580 apparatus equipped with a flame ionization detector (FID) and a Crossbond dimethylpolysiloxane column (60m in length, 0.25 mm of inner diameter, 1.4µm of film thickness). The carrier gas flow (He) was 2mL/min, and the temperature program was: 35℃, 6 min;8℃/min up to 180℃; 12℃/min up to 220℃; 25 min. The inlet and FID temperature was 250℃.

An HT2800T autosampler (HTA Brescia, Italy) was used, and PerkinElmer Total Chrom 6.3.2 software(PerkinElmer, Walthman, MA, USA) was used to integrate the results. Identification was performed based on the retention times compared with those of the standards for the volatile compounds, and quantification was carried out by internal standardization, using 4-methyl-2-pentanol (alcohols) and ethyl nonanoate (esters) as the internal standards. The standard solutions were prepared in synthetic wine (20g/L sucrose, 5g/L tartaric acid, 10% ethanol). All experiments were performed in triplicate.

微信截圖_20220718090321.png

HT2800T

(點(diǎn)擊圖片了解更多產(chǎn)品詳情)

好的儀器不僅可以幫我們完成科研或質(zhì)檢工作;提高工作效率;提供準(zhǔn)確可信的實(shí)驗(yàn)數(shù)據(jù);fa論文都離不開(kāi)她。你想做“裝備控"嗎?



2025 版權(quán)所有 © 月旭科技(上海)股份有限公司  備案號(hào):滬ICP備05030427號(hào)-4 GoogleSitemap管理登陸 技術(shù)支持:化工儀器網(wǎng)

地址:上海市松江區(qū)明南路85號(hào)啟迪漕河涇(中山)科技園紫荊園10號(hào)樓 傳真: 郵件:linchen2@welchmat.com

關(guān)注我們

服務(wù)熱線

掃一掃,關(guān)注我們

日韩电影一区二区三区| 欧美肥胖老妇做爰| 日本又黄又爽gif动态图| 国产精品美女久久久久| 无码av免费毛片一区二区| 日本japanese丰满少妇| 欧美大肥婆大肥bbbbb| 強開小嫩苞一區二區三區| 久久夜色精品国产欧美乱| 真人做真爱30分视频免费| 一次灌浆与二次灌浆| 被老外添嫩苞添高潮np视频| 久久久久无码国产精品不卡| 插我舔内射18免费视频| 主人野外羞耻调教贱奴 | 里番本子纯肉侵犯肉全彩无码| 全彩调教本子h里番全彩无码| 国产精品videossex久久发布| 小雪公交车灌满好爽h| 校草喝下春药被男生玩弄| 免费看国产曰批40分钟无码| 无码国产精品一区二区免费式直播 | 精品无码一区二区三区爱欲| 国产欧美一区二区三区在线看| 免费无码国产欧美久久18| 欧美dancepartyhd| 欧洲处破女www人鲁| 9色丨porny丨人妻| 国产一区二区在线观看| 呦香8黝黝狖呦香8| 亚洲精品又粗又大又爽a片| 一边摸一边抽搐一进一出视频| 国产乱子伦一区二区三区| chinese山西老熟女bbw| 国产毛多水多做爰爽爽爽| 女人被躁到高潮嗷嗷叫游戏| 強姦犯された人妻たち| 男朋友舌头伸到下面很肿胀| 亚洲精品久久久久久久蜜桃| 妺妺窝人体色www在线小说| 三级网站午夜三级|