Preparative

  • Sample Preparation for Drug testing via Hair Analysis

Sample Preparation for Drug testing via Hair Analysis

Aug 07 2019 Read 552 Times

In order to prove the consumption of drugs (cocaine, cannabis products, amphetamines) even after long periods of time, hair is frequently analysed.

It is dissolved in certain acids and then analysed via gas chromatography or the mass spectrometer. The dissolving in the acid is accelerated and improved through the enhancement of the specific surface area of the sample. Here the Fritsch Mini-Mill -PULVERISETTE 23 is used.

 

In a 15ml steel cup, 300-500mg hair is weighed. As a grinding body a 15mm steel ball is used. After a grinding duration of 5 minutes a fine powder is attained (< 100µm), which can be used for the following analysis.

For larger amounts or for the grinding of two samples simultaneously, the Fritsch Planetary Micro Mill PULVERISETTE 7 classic line can be used. In a 45 ml grinding bowl made of zirconium oxide, sintered corundum, silicon nitride approximately 0.1-1g of hair is weighed in and 7x15mm grinding balls are added. The grinding time is 5 - 20 minutes. Afterwards a fine powder is obtained (< 100 µm), which can be used for additional analysis.

More information online: www.fritsch.de

Reader comments

Do you like or dislike what you have read? Why not post a comment to tell others / the manufacturer and our Editor what you think. To leave comments please complete the form below. Providing the content is approved, your comment will be on screen in less than 24 hours. Leaving comments on product information and articles can assist with future editorial and article content. Post questions, thoughts or simply whether you like the content.

Post a Comment




Digital Edition

Chromatography Today - Buyers' Guide 2020

December 2019

In This Edition Articles - On-column digestion of mAbs for automated middle-level analysis by LC-MS - Increasing Peak Capacity for the Gradient Analysis of Protein Digests and other Complex...

View all digital editions

Events

HTC-16

Jan 29 2020 Ghent, Belgium

MEDLAB MIDDLE EAST

Feb 03 2020 Dubai, UAE

China Lab 2020

Mar 11 2020 Guangzhou, China

Arabchem

Mar 16 2020 Dubai, UAE

ARABLAB 2020

Mar 16 2020 Dubai, UAE

View all events