| 查看: 3063 | 回復(fù): 11 | ||
koalaone木蟲 (小有名氣)
|
[求助]
氣相測殘留溶劑的回收率要求是多少?
|
|
最近在做一原料殘留溶劑的方法學(xué)驗(yàn)證,但測得的回收率比較高,問一下氣相測殘留溶劑的回收率官方要求是多少?![]() |
木蟲 (正式寫手)
新蟲 (初入文壇)
|
My experience as your reference: 1. 氣相測殘留溶劑的回收率: 80%-120%. 2. 原料殘留溶劑的方法學(xué)驗(yàn)證,但測得的回收率比較高: since you are working on 原料殘留溶劑, you cannot add your reference standard to placebo to measure your recovery. You only can use 原料 + 80%, 100%, 120% working standard solution (100% working standard solution is ICH limit level) to calculate recovery%. To troubleshooting 回收率比較高 1) When you measure your sample(原料), you may measure your sample n=3 or 5 to get mean value. 2) Prepare sample in a fast or correct way (我100mg定容到1ml, this is not normal way to do, the volume is too low that will be difficult to manage sample evaporation) to avoid sample evaporation. 3) Sample + matrix interaction may cause this issue too. You can try different solvent (matrix) to dissolve your sample. 4) If still cannot get right recovery%, you may try internal standard or external standard method. |
木蟲 (正式寫手)
新蟲 (小有名氣)
木蟲 (小有名氣)
金蟲 (小有名氣)

|
本帖內(nèi)容被屏蔽 |

銅蟲 (初入文壇)

木蟲 (正式寫手)
| 最具人氣熱帖推薦 [查看全部] | 作者 | 回/看 | 最后發(fā)表 | |
|---|---|---|---|---|
|
[考研]
材料調(diào)劑
5+6
|
想要一壺桃花水 2026-03-25 | 12/600 |
|
|---|---|---|---|---|
|
[考研] 一志愿a區(qū)211,085601-307分求調(diào)劑 +10 | 黨嘉豪 2026-03-31 | 23/1150 |
|
|
[考研] 080500-315分復(fù)試調(diào)劑 +9 | 上岸3821 2026-03-31 | 9/450 |
|
|
[考研] 286分調(diào)劑 +11 | Faune 2026-03-30 | 13/650 |
|
|
[考研] 材料求調(diào)劑 一志愿哈工大總分298分,前三科223分 +11 | dongfang59 2026-03-27 | 11/550 |
|
|
[考研] 一志愿南昌大學(xué)324求調(diào)劑 +6 | hanamiko 2026-03-29 | 6/300 |
|
|
[考研] 08工科,295,接受跨專業(yè)調(diào)劑 +4 | lmnlzy 2026-03-31 | 4/200 |
|
|
[考研] 085601 材料工程 313分 求調(diào)劑 +6 | Ong3 2026-03-27 | 6/300 |
|
|
[考研] 286求調(diào)劑 +6 | Faune 2026-03-30 | 6/300 |
|
|
[考研] 287求調(diào)劑 +17 | land xuxu 2026-03-26 | 17/850 |
|
|
[考研] 266分,求材料相關(guān)專業(yè)調(diào)劑 +10 | 哇呼哼呼哼 2026-03-30 | 12/600 |
|
|
[考研] 求調(diào)劑 +4 | 研s. 2026-03-25 | 4/200 |
|
|
[考研] 085600材料與化工調(diào)劑 +16 | kikiki7 2026-03-30 | 16/800 |
|
|
[考研] 吉大生物學(xué)326分求調(diào)劑 +3 | sunnyupup 2026-03-31 | 3/150 |
|
|
[考研] 材料與化工調(diào)劑一志愿大連海事085600,349 +6 | 吃的不少 2026-03-30 | 6/300 |
|
|
[考研] 328求調(diào)劑 +8 | 嗯滴的基本都 2026-03-27 | 8/400 |
|
|
[考研] 332求調(diào)劑 +6 | Lyy930824@ 2026-03-29 | 6/300 |
|
|
[考研] 一志愿北京工業(yè)大學(xué),324分求調(diào)劑 +6 | 零八# 2026-03-28 | 6/300 |
|
|
[考研] 求調(diào)劑 +4 | QiMing7 2026-03-25 | 5/250 |
|
|
[考研] 打過很多競賽,085406控制工程300分,求調(diào)劑 +3 | askeladz 2026-03-26 | 3/150 |
|