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A blog on the latest applications, articles, & research on chromatography solutions in sample preparation, Ion Chromatography (IC),
High Pressure Liquid Chromatography (HPLC), Ion Chromatography-Mass Spectrometry (IC-MS), Gas Chromatography (GC),
Gas Chromatography-Mass Spectrometry (GC-MS and GC-MS/MS), and software (Chromeleon CDS, LIMS, and ProteinCenter).

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Accelerated Solvent Extraction: Organochlorine Pesticides in Oysters

  
  
  
  
  
  
sample preparation oyster tissue

Here, I am pleased to feature an improved and fast sample preparation method for challenging matrices, such as a wet animal tissue, for example an oyster sample using our latest dispersant and sorbant copolymer. This polymer was featured in a blog post some weeks ago: Accelerated Solvent Extraction: New Polymer for Wet Samples (link to post).

Gas Chromatography Headspace Analysis of Residual Solvents

  
  
  
  
  
  
analysis of solvents in food packaging

I am pleased to feature a recently released automated gas chromotography method for the analysis of residual solvents in flexible packaging material used for food that not only easily meets the requirements of the European Standard absolute method EN 13628-1: 2002 standard but also provides excellent quantitation results without any sample preparation! (By the way, if you are new to food testing, EN 13628-1: 2002 is the British standard for determining residual solvents by static headspace gas chromatography and applies to flexible packaging materials that consist for mono- or multilayer plastic films, paper or board, foil or combinations thereof.)

HPLC Speeds Determination of Dicyandiamide in Milk Powder

  
  
  
  
  
  
dicyandiamide analysis in milk powder

Here, I am pleased to feature an efficient and simple reliable HPLC method for the monitoring of dicyandiamide levels in milk and milk-derived products; last year, a New Zealand company found traces of this toxic chemical in its milk products (link to story).

Accelerated Solvent Extraction: Fast Extraction of Fat in Snack Foods

  
  
  
  
  
  
fat determination in snacks

Reading this application update on a faster sample preparation method for the extracting total unbound fat from packaged foods, I learned that many regulatory agencies, such as the US FDA, the Food Safety and Standards Authority of India, UK's Dept for Environment, Food & Rural Affairs, and the Australia New Zealand Food Standards Code, require that the nutritional content including fat in processed and packaged food is declared on the product label. (Links open labeling regulatory pages or PDFs.)

Ion Chromatography: Municipal Water Analysis Applications Notebook

  
  
  
  
  
  
Municipal Water Analysis Applications

Did you know that the state of California in the USA is heading into year three of its worst drought of 40 years? (Link to story.) Experts in the state are looking at efficiencies and reuse of water sources, such as agricultural and urban water, water reuse and recycling, and increased capturing of local rainwater.

HPLC Method for Metabolite Profiling of Wine, Juice, & Tea

  
  
  
  
  
  
metabolite profiling of tea wine fruit juice

I am pleased to present a recently released application note featuring a gradient HPLC method to study product authenticity, such as differentiating wine varietals, orange juice varietals and growing region, and distinguishing tea blends, and identifying adulteration in juices, such the blending of orange juice with cheaper juices or the inclusion of peel or pulp wash.

HPLC & CAD: Surfactants and Emulsifiers Applications Notebook

  
  
  
  
  
  
analysis of emulsifiers and surfactants using hplc

Did you know that the global food emulsifiers market is one of the fastest growing markets in the food ingredient market and is estimated to grow to $2,858.6 million by 2018? (Link to market research website.) Emulsifiers are used to stabilize emulsions in the food industry plus used as an additive to reduce fat content. Surfactants are compounds that lower the surface tension between liquids or a liquid and a solid, and are used as detergents, wetting agents, emulsifiers, foaming agents, and dispersants. (Definition and link Wikipedia page.) Other important uses of surfactants include industrial applications in lubrication, textile processing, petroleum recovery, and wastewater treatment.

Chromatography Analysis of Additives & More in Beverages (II)

  
  
  
  
  
  
analysis of additives in beverage

After last month's post featuring chromatography applications for the analysis of sugars and artificial sweeteners in beverages (link to post), I am pleased to present two more application notebooks for the analysis of beverages, one for the analysis of carbonated beverages and the other for the analysis of additives in beverages.

Chromatography Analysis of Sugars & Sweeteners in Beverages (I)

  
  
  
  
  
  
chromatography sugars in beverages

Have you been following the increasing efforts by various governments to regulate the amount of sugar in beverages or impose sugar taxes on sugary drinks in an effort to reduce sugar in food and beverage products? In one story, UK's chief medical officer told a committee of MPs that a sugar tax may have to be introduced to curb obesity rates (link to story) and in another story, the state of Illinois, in the USA, is considering a new tax on sugary beverages (link to story). By the way, a new study concluded that fruit juice has only a bit less fructose than sugary sodas (link to study).

Why Settle for Cr(VI) 20 ppt When You Can Get 1 ppt in Half the Time?

  
  
  
  
  
  
hexavalent chromium testing

I know the title does not sound as one of our typical titles but I thought I would focus on the test results rather than the technology for once. By the way, did you know that it has already been more than two years ago since we first alerted you on new detection limits for hexavalent chromium (the topic is the subject of the blog post: Ion Chromatography Analysis of Hexavalent Chromium) and how the U.S. EPA has used our ion chromatography technology to develop the U.S. EPA Method 218.6 way back in 1991 for the determination of Cr(VI) in drinking water.

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