质谱技术应用】如何制备亮氨酸脑啡肽溶液用于 Waters Q-Tof
菜鸟博士
如何制备亮氨酸脑啡肽溶液用于 Waters Q-Tof?- 中文版本
菜鸟博士Caesar
目的
亮氨酸脑啡肽以粉末形式装于 3 mg 样品瓶中。以下步骤将指导您制作各种浓度的亮氨酸脑啡肽。
环境
亮氨酸脑啡肽在所有 Waters Q-Tof 上均用作标准品。
亮氨酸脑啡肽
标准品
步骤
亮氨酸脑啡肽
C28H37N5O7
Tyr Gly Gly Phe Leu
Masslynx:(M+H) m/z 556.2771,(M-H) m/z 554.2615
UNIFI:(M+H)+ m/z 556.2766,(M-H)- m/z 554.2620
2 ng/µL 亮氨酸脑啡肽
使用 5 mL 移液管,向装有 3 mg (±0.15 mg) 亮氨酸脑啡肽的瓶中加入 7.5 mL 水。
盖上盖子,充分摇匀,超声处理 5 min。
贴上“400 ng /μL 亮氨酸脑啡肽水溶液”标签,储存在冰箱中(有效期为三个月)。
使用 200 μL 移液管移取 100 μL 400 ng/μL 亮氨酸脑啡肽水溶液至 20 mL 容量瓶中。
用 50:50 乙腈/水 + 0.1% 甲酸定容至 20 mL,超声处理 5 min。
贴上“溶于 50:50 乙腈/水 + 0.1% 甲酸的 2 ng/μL 亮氨酸脑啡肽溶液”标签,储存在冰箱中(有效期为一个月)。
对于流路系统,将 20 mL 容量瓶的溶液转移至 30 mL 流路容器中,并贴上“溶于 50:50 乙腈/水 + 0.1% 甲酸的 2 ng/μL 亮氨酸脑啡肽溶液”,储存于冰箱中(有效期为一个月)。
1 ng/µL 亮氨酸脑啡肽
使用 5 mL 移液管向装有 3 mg 亮氨酸脑啡肽的瓶中加入 7.5 mL 水。
盖上盖子,充分摇匀,超声处理 5 min。
贴上“400 ng /μL 亮氨酸脑啡肽水溶液”标签,储存在冰箱中(有效期为三个月)。
使用 200 μL 移液管移取 50 μL 400 ng/μL 亮氨酸脑啡肽水溶液至 20 mL 容量瓶中。
用 50:50 乙腈/水 + 0.1% 甲酸定容至 20 mL,超声处理 5 min。
将 20 mL 容量瓶中的溶液转移至 30 mL 流路容器。
贴上“溶于 50:50 乙腈/水 + 0.1% 甲酸的 1 ng/μL 亮氨酸脑啡肽溶液”标签,并储存在冰箱中(有效期为一个月)。
200 pg/µL 亮氨酸脑啡肽
将约 4 mL 溶于 50:50 乙腈/水 + 0.1% 甲酸的 2 ng/μL 亮氨酸脑啡肽溶液倒入 5 mL 玻璃样品瓶中。
使用 1000 μL 移液管移取 2000 μL 溶于 50:50 乙腈/水 + 0.1% 甲酸的 2 ng/μL 亮氨酸脑啡肽溶液至 20 mL 容量瓶中。
用 50:50 乙腈/水 + 0.1% 甲酸定容至 20 mL,超声处理 5 min。
贴上“溶于 50:50 乙腈/水 + 0.1% 甲酸的 200 pg/μL 亮氨酸脑啡肽溶液”标签,并储存于冰箱中(有效期为两周)。
对于流路系统,将 20 mL 容量瓶中的溶液转移至 30 mL 流路容器中,并贴上“溶于 50:50 乙腈/水 + 0.1% 甲酸的 200 pg/μL 亮氨酸脑啡肽溶液”标签,储存于冰箱中(有效期为两周)。
50 pg/µL 亮氨酸脑啡肽
使用 1000 μL 移液管移取 500 μL 溶于 50:50 乙腈/水 + 0.1% 甲酸的 2 ng/μL 亮氨酸脑啡肽溶液至 20 mL 容量瓶中。
用 50:50 乙腈/水 + 0.1% 甲酸定容至 20 mL,超声处理 5 min。
贴上“溶于 50:50 乙腈/水 + 0.1% 甲酸的 50 pg/μL 亮氨酸脑啡肽溶液”,并储存于冰箱中(有效期为一周)。
How to prepare leucine enkephalin solution for a Waters Q-Tof? - 英文版本
Article number: 2368
OBJECTIVE or GOAL
Leucine enkephalin is supplied as a powder in a 3-mg vial. The following procedure guides you in making up various concentrations of leucine enkephalin.
ENVIRONMENT
This is a standard that is used on all of Waters Q-Tofs.
Leucine enkephalin
standard
PROCEDURE
Leucine enkephalin
C28H37N5O7
Tyr Gly Gly Phe Leu
Masslynx: (M+H) m/z 556.2771, (M-H) m/z 554.2615
UNIFI: (M+H)+ m/z 556.2766, (M-H)- m/z 554.2620
2 ng/μL leucine enkephalin
Using a 5-mL pipette, add 7.5 mL of water to the contents of a 3-mg (±0.15 mg) bottle of leucine enkephalin.
Recap, shake well, and sonicate for five minutes.
Label as "400 ng/μL leucine enkephalin in water" and store in a freezer (expires in three months).
Using a 200-μL pipette, transfer 100 μL of the 400 ng/μL leucine enkephalin in water to a 20-mL volumetric flask.
Make up to 20 mL with 50:50 acetonitrile/water + 0.1% formic acid and sonicate for five minutes.
Label as "2 ng/μL leucine enkephalin in 50:50 acetonitrile/water + 0.1% formic acid" and store in a freezer (expires in one month).
For fluidics systems, transfer from the 20-mL volumetric flask to a 30-mL fluidics container and label as "2 ng/μL leucine enkephalin in 50:50 acetonitrile/water + 0.1% formic acid" and store in a freezer (expires in one month).
1 ng/μL leucine enkephalin
Using a 5-mL pipette, add 7.5 mL of water to the contents of a 3-mg bottle of leucine enkephalin.
Recap, shake well, and sonicate for five minutes.
Label as "400 ng/μL leucine enkephalin in water" and store in a freezer (expires in three months).
Using a 200-μL pipette, transfer 50 μL of the 400 ng/μL leucine enkephalin in water to a 20-mL volumetric flask.
Make up to 20 mL with 50:50 acetonitrile/water + 0.1% formic acid and sonicate for five minutes.
Transfer from the 20-mL volumetric flask to a 30-mL fluidics container.
Label as "1 ng/μL leucine enkephalin in 50:50 acetonitrile/water + 0.1% formic acid" and store in a freezer (expires in one month).
200 pg/μL leucine enkephalin
Decant approximtely 4 mL of the 2 ng/μL leucine enkephalin in 50:50 acetonitrile/water + 0.1% formic acid solution into a 5-mL glass vial.
Using a 1,000-μL pipette, transfer 2,000 μL of the 2 ng/μL leucine enkephalin in 50:50 acetonitrile/water + 0.1% formic acid solution to a 20-mL volumetric flask.
Make up to 20 mL with 50:50 acetonitrile/water + 0.1% formic acid and sonicate for five minutes.
Label as "200 pg/μL leucine enkephalin in 50:50 acetonitrile/water + 0.1% formic acid" and store in a refrigerator (expires in two weeks).
For fluidics systems, transfer from the 20-mL volumetric flask to a 30-mL fluidics container and label as "200 pg/μL leucine enkephalin in 50:50 acetonitrile/water + 0.1% formic acid" and store in a refrigerator (expires in two weeks).
50 pg/μL leucine enkephalin
Using a 1,000 μL pipette, transfer 500 μL of the 2 ng/μL leucine enkephalin in 50:50 acetonitrile/water + 0.1% formic acid solution to a 20-mL volumetric flask.
Make up to 20 mL with 50:50 acetonitrile/water + 0.1% formic acid and sonicate for five minutes.
Label as "50 pg/μL leucine enkephalin in 50:50 acetonitrile/water + 0.1% formic acid" and store in a refrigerator (expires in one week).