About wei-liu

wei-liu · 03-29-2017

If you search “lead in public school drinking water” you may see news every day on either lead contamination or actions taken in a particular state to measure lead levels in school drinking water. In the wake of the Flint drinking water crisis due to...

wei-liu · 11-30-2016

If you read my blog post last year on lead contamination in a community garden in Vancouver, Canada, you would know how soil contaminated with heavy metals can be so detrimental to our health. Just two months ago, while the Indiana governor, Mike Pen...

wei-liu · 10-26-2016

If you read my previous blog post on heavy metal contamination event in Colorado’s Animas River, you have heard how a single mistake can lead to the contamination of a natural resource as along with economic consequences and public health concerns. J...

wei-liu · 09-26-2016

While the story is still developing for lead contamination in drinking water at Flint, Michigan (to see how it can happen, download the lead contamination infographic), we heard that chromium (VI), or Cr(VI) has been found in drinking water at Boulde...

wei-liu · 08-26-2016

You have heard of air pollution, water pollution, and environmental pollution, but have you heard of nutrient pollution? You heard it right. Nutrients can also pollute our environment. Due to human activities, large amounts of nitrogen and phosphorus...

wei-liu · 12-04-2017

developed for analysis of arsenic or lead using GFAA. I hope that these notes can guide your analysis.https://tools.thermofisher.com/content/sfs/brochures/AN-40851-AAS-Arsenic-Natural-Waters-AN40851-EN.pdfhttps://tools.thermofisher.com/content/sfs/br...

wei-liu · 11-20-2017

Thanks for your questions. I’m afraid there is no simple answer since we don’t have enough information. The instrument parameters set-up and selected wavelengths are important.I have the application note link below you can click to read, which may he...

wei-liu · 04-05-2017

Hi Iris, the tap water and commercial water are required by the EPA or FDA to test for these toxic metals and make sure they meet the regulatory standards. But since lead mainly contaminate the tap water through the distribution fixtures and solders ...

wei-liu · 01-30-2017

Thanks for your question, Vishnu. In the U.S., regulatory compliance testing for metals in drinking water requires approved methods such as EPA methods 200.7, 200.8, and 200.9. Labs need to use the procedures described in these methods for testing. F...

wei-liu · 08-24-2016

I'm glad you enjoyed the topic, Brooke. To answer your question, if the concentrations of the analytes are high it is common to use radial view and to leave the buffer out. But if the ionization buffer is added online there shouldn't be any problem.

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Lead Testing in Public School Drinking Water

Soil Contaminants: What Do You Need to Worry About?

Colorado Is Hit with Surface Water Contamination Again

Has Chromium Contaminated Your Drinking Water?

Nutrient Pollution in Wastewater: An Emerging Global Problem

Re: Top Four Toxic Metals in Water: Facts and Testing

Re: Environmental Testing of High-Matrix Samples: 4 Tips for ICP-OES Analysis

Re: Top Four Toxic Metals in Water: Facts and Testing

Re: Top Four Toxic Metals in Water: Facts and Testing

Re: Environmental Testing of High-Matrix Samples: 4 Tips for ICP-OES Analysis

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