News

The Total Oxidizable Precursor (TOP) Assay is an oxidative sample pre-treatment method aimed at converting the PFAS (Perfuoroalkyl Substances) within a sample into the stable perfluoroalkyl acids that can be quantified by conventional LC/MS/MS analytical techniques, thereby providing a greater understanding of the extent of PFAS within a sample. The oxidation is achieved by hydroxyl radicals, formed under heated alkaline conditions from prescribed amounts of potassium persulfate (KPS) and sodium hydroxide (NaOH) added to the sample prior to incubation. Read More

Most environmental practitioners understand that field filtration is considered the best practice when collecting water samples for dissolved metals testing, but many people may be unaware of the causes and potential magnitude of negative consequences associated with delayed filtration.  Read More

The Stage 11 (Housekeeping) amendments to the CSR were approved on October 31, 2017. The Stage 11 amendments corrected a number of errors in the Stage 10 amendments found during the year of transition prior to coming into legal force on November 1, 2017. Read More

In August 2017, ExxonMobil submitted a request to the US EPA regarding alternative testing procedures to Methods 325A and 325B (40 CFR 63, Appendix A). In response to this request, on September 11, 2017 the US EPA approved a number of planned revisions to the method, which can be utilized prior to the method’s projected formal revision date of 2018. Read More

In an effort to further optimise the service offering to our client base via concentration of expertise and equipment, and to achieve economies of scale and thereby cost base synergies, a decision was taken to cease operations of the ALS Santiago metallurgy business in March, 2017. Read More

เอแอลเอส ประเทศไทย มีความยินดีที่จะเรียนให้ท่านทราบว่า บริษัทฯ ได้ทำการเปลี่ยนแปลงหมายเลขโทรสารของสำนักงานใหญ่กรุงเทพฯ ดังนี้ / ALS Thailand pleasure to inform you that we will officially be using the following new facsimile numbers Read More

Fugitive volatile organic compound (VOC) releases from facilities in the petroleum and petrochemical sectors may pose health and environmental risks to Canadians. As part of the Government of Canada’s Chemical Management Plan (CMP), new requirements will be imposed upon petroleum refineries, upgraders and certain petrochemical facilities to reduce the risk of exposure to humans and the environment.  Read More

Sampling for trace metals in groundwaters, surface waters, leachates and process waters is one of the most common field techniques utilized across the environmental industry globally. There are several practices used in different regions and this EnviroMail discusses changes at ALS Canada in support of global best practice. This is the first of two EnviroMails that will provide background information and technical guidance on trace metal preservation and sampling, along with changes being introduced by ALS to help maximize quality, safety, and efficiency in the field. The second EnviroMail due for release next month will look at the importance of field filtration and the impacts this can have on data quality. Read More

There are hundreds of chemicals that can be classed as PFAS (Per and poly-fluorinated Alkyl Substances). Accredited laboratories typically determine approximately 30 of these specific chemicals. In many fire-fighting foams and other products containing PFAS, the bulk of these chemicals may be tied up in more complex molecules including polymeric compounds. Routine laboratory analysis, for the most part, includes PFAS as carboxylic and sulfonic acids and may also include one or more sulfonamides [1,2]. Read More

Monitoring of coal mine dust levels is a critical process in controlling the risks of exposure to workers and is required under Australian law.  ALS offers coal mine dust analysis for occupational exposure assessment and monitoring, with the amount of crystalline silica present able to be determined as part of the analysis.  Read More