| 7 | 1/1 | 返回列表 |
| 查看: 1468 | 回復(fù): 6 | |||
zybpxy鐵桿木蟲(chóng) (著名寫(xiě)手)
致齋大人
|
[求助]
關(guān)于脂肪酸GC及GC-MS定性的問(wèn)題 已有1人參與
|
|
待分析樣品:淡水魚(yú)肌肉脂肪酸組成; 文獻(xiàn)中采用FID檢測(cè)器進(jìn)行檢測(cè),并用了sigma的混標(biāo)進(jìn)行定性。請(qǐng)問(wèn)如何得知混標(biāo)中37種脂肪酸甲酯的出峰時(shí)間呢? 小弟的柱子是DB-5 下附文獻(xiàn)及標(biāo)品網(wǎng)址 Approximately 50–100 mg lipids were then used for lipid class determinations by gas chromatography. Fatty acid methyl esters (FAME) were prepared by transesterification with borontrifluoride (BF3) in methanol at 70 °C. FAME was run on an Shimadzu GC-2010 gas chromatograph equipped with aflame ionization detector, a fused silica capillary column (30 m × 0.25 mm ID × 0.3 μm film, FFAP, Dalian Institute of Chemical Physics Chinese Academy of Sciences) and GC solution software. Hydrogen was used as the carrier gas (flow velocity: 1.0 ml min− 1). The injector temperature was adjusted to 260 °C, and the column temperature was increased from 160 °C to 230 °C at a rate of 2.0 °C min− 1 and then held at 230 °C for 15 min. The detector was maintained at 230 °C. The identifications of fatty acids were based on comparisons of retention times with known FAME standard mixtures (a 37-component FAME mix and menhaden oil, Sigma, Chemical Co, USA). 標(biāo)品網(wǎng)址:http://www.sigmaaldrich.com/cata ... ng=zh®ion=CN |

木蟲(chóng) (正式寫(xiě)手)
鐵桿木蟲(chóng) (著名寫(xiě)手)
致齋大人

金蟲(chóng) (小有名氣)
鐵桿木蟲(chóng) (著名寫(xiě)手)
致齋大人

金蟲(chóng) (小有名氣)
新蟲(chóng) (著名寫(xiě)手)
| 7 | 1/1 | 返回列表 |
| 最具人氣熱帖推薦 [查看全部] | 作者 | 回/看 | 最后發(fā)表 | |
|---|---|---|---|---|
|
[考研] 085701環(huán)境工程求調(diào)劑 +10 | 多久上課 2026-03-27 | 11/550 |
|
|---|---|---|---|---|
|
[考研] 085600,專業(yè)課化工原理,320分求調(diào)劑 +5 | 大饞小子 2026-03-29 | 5/250 |
|
|
[考研] 一志愿南開(kāi)大學(xué)0710生物學(xué)359求調(diào)劑 +5 | 兔兔兔111223314 2026-03-29 | 7/350 |
|
|
[考研] 303求調(diào)劑 +7 | DLkz1314. 2026-03-30 | 7/350 |
|
|
[考研] 求調(diào)劑 +7 | 研研,接電話 2026-03-24 | 8/400 |
|
|
[考研] 一志愿中南大學(xué)化學(xué)0703總分337求調(diào)劑 +6 | niko- 2026-03-27 | 6/300 |
|
|
[考研] 求調(diào)劑 +10 | 張zz111 2026-03-27 | 11/550 |
|
|
[考研] 279求調(diào)劑 +4 | 蝶舞輕繞 2026-03-29 | 4/200 |
|
|
[考研] 083000學(xué)碩274求調(diào)劑 +8 | Li李魚(yú) 2026-03-26 | 8/400 |
|
|
[考研] 一志愿華理,數(shù)一英一285求A區(qū)調(diào)劑 +8 | AZMK 2026-03-25 | 12/600 |
|
|
[考研] 283求調(diào)劑 +7 | A child 2026-03-28 | 7/350 |
|
|
[考研] 086000調(diào)劑 +3 | 7901117076 2026-03-26 | 3/150 |
|
|
[有機(jī)交流]
高溫高壓反應(yīng)求助
10+4
|
chibby 2026-03-25 | 4/200 |
|
|
[考研] 求調(diào)劑 +4 | 零八# 2026-03-27 | 4/200 |
|
|
[考研] 272求調(diào)劑 +7 | 腳滑的守法公民 2026-03-27 | 7/350 |
|
|
[考研] 安徽大學(xué)專碩生物與醫(yī)藥專業(yè)(086000)324分,英語(yǔ)已過(guò)四六級(jí),六級(jí)521,求調(diào)劑 +4 | 美味可樂(lè)雞翅 2026-03-26 | 4/200 |
|
|
[考研] 305求調(diào)劑 +5 | 哇盧卡庫(kù) 2026-03-26 | 5/250 |
|
|
[考研] 085601 材料工程 313分 求調(diào)劑 +5 | Ong3 2026-03-27 | 5/250 |
|
|
[考研]
|
WWW西西弗斯 2026-03-24 | 8/400 |
|
|
[考研] 290分調(diào)劑求助 +3 | 吉祥止止陳 2026-03-25 | 3/150 |
|