Welcome Emma to Kruvelab! In the autumn, we were lucky to participate in an interlaboratory trial on non-target screening (NTS) with liquid chromatography high-resolution mass spectrometry (LC/HRMS) alongside other Swedish labs. We were able to test our ability to identify spiked chemicals in blind water samples as well as quantify the tentatively identified chemicals with […]
Category Archives: Projects
04
Jan
Jan
As I am writing this, 2022 is approaching its last hours, and it is high time for a throwback to the year, my friends, and a bit of peaking into the upcoming 2023. 2022 was a very fruitful year for Kruvelab. Since I moved to Stockholm University in mid-2019 I have been building – with […]
08
Sep
Sep
Last week Amina, Pilleriin, and I participated in the International Mass Spectrometry conference 2022 in Maastricht, The Netherlands. With more than 1300 participants IMSC was the first big mass spec conference in Europe after covid and a special feeling of enthusiasm was in the air. We kicked off on Monday morning with a session on […]
13
Jun
Jun
The last two weeks have been going under the title “thesis-thesis-thesis” in our group. This spring one BSc student and two MSc students from our group have defended their thesis: Sara Khabazbashi, Helen Sepman, and Thomas Ledbetter. Both Sara and Thomas have dug into the analytical standard free quantification for pollutants. Sara specifically focussed on metabolites of […]
25
Feb
Feb
Non-targeted screening with liquid chromatography-electrospray high-resolution mass spectrometry (LC/ESI/HRMS) is revealing hundred to thousands of contaminants in the water. We have recently proposed a way to quantify these contaminants based on the estimated LC/ESI/HRMS ionization efficiencies. But how to know how well such tools are performing? Well, we need to compare with classical methods that are […]
19
Oct
Oct
The difficulty in quantifying compounds in LC/ESI/HRMS arises from vastly different responsiveness of the compounds. At the same concentration, two compounds may yield very different signals due to the differences in the ionization efficiency of the compounds. The different responsiveness has made semi-quantitative non-targeted screening challenging. Still, research has been increasingly focussing on enabling the semi-quantification […]
28
Feb
Feb
After the move to Stockholm University, my group is looking for new members. Currently, we have available a post-doc position. If you enjoy coding, are interested in machine learning and applying these tools to solve problems in mass spectrometry and you hold a PhD or are graduating soon, this is your chance! For more information […]
15
Dec
Dec
The textile industry is one of the most polluting industries, at the same time, only 1% of the material is recycled. This causes not only a loss of valuable resources but also environmental impact through landfills. One of the main obstacles in textile recycling and upcycling is the quality of the source material. The quality of the […]