syringe water sampling Articles

  • The productive environmental laboratory: BSK Labs boosts efficiency with Metrohm IC

    BSK Labs runs a number of environmental laboratories and service centers along the west coast of the US. A total of 70 employees – including microbiologists, chemists, lab technicians, and support staff – make sure that the 200 to 350 samples that come in every week are analyzed. BSK Labs specializes in potable water chemistry, ground water monitoring, storm water runoff, solid waste ...


    By Metrohm AG

  • Increasing sample throughput in method 8260 using the novel oven design of the Clarus 600 GC/MS

    U.S. Environmental Protection Agency (EPA) Method 8260 – volatile organic analysis by gas chromatography/mass spectrometry (GC/MS) – is one of the most common GC/MS methods performed in environmental laboratories. To increase profits and meet customer needs, many environmental laboratories need to analyze more samples faster, increasing throughput. Achieving high levels of throughput ...


    By PerkinElmer, Inc.

  • Detecting Mercury in Water

    Determination of Mercury (Hg) in Water by Hand-Held, Portable Cold Vapor Atomic Fluorescence SpectrometryWater is the most familiar and most abundant compound on Earth, making up 71% of its surface area.[1]It is a vital component for all known forms of life and is the aquatic habitat for thousands of species of microalgae, fish and shellfish. [2] With the presence of running water in our ...


    By Arizona Instrument LLC

  • Solvent choices for infrared testing of oil and grease in water

    Water is a very strong absorber in the mi d infrared (I R) regio n where o il is measured. We see the effect of infrared absorbance when a cold bucket of water left in the sun is quite warm by afternoon due to the absorption of infrared energy as heat. When measuring part per million (ppm) oil levels with mid IR, the water absorbs so much of the infrared energy that the signal becomes saturated ...


    By Spectro Scientific

  • Analysis of Organophosphorus and Organonitrogen herbicides in water using GC/MS with selected ion recording

    Laboratories monitoring trace level pesticides and herbicides by gas chromatography/mass spectrometry (GC/MS) frequently utilize Selected Ion Recording (SIR) techniques to maximize analytical sensitivity for quantification. With analytical standards, precision is limited to a large extent only by the autosampler and other instrumental effects. However, real-world samples pose a greater challenge. ...


    By PerkinElmer, Inc.

  • Detection of atrazine and 2,4-d in raw milk

    MATRIX: Raw Milk ANALYTES: Atrazine, 2,4-D RANGE OF DETECTION: Atrazine: 5 to 250 ppb, 2,4-D: 0.05 to 2.5 ppm MATERIALS: RaPID Assay, Kit and Sample Diluent for Atrazine and 2,4-D Reagents: methanol (pesticide grade), glacial acetic acid, distilled or deionized water, diatomacoeus earth (Celite 545). Equipment: ...


  • The Missing Link in Bacteria TMDLs: Natural Growth

    INTRODUCTIONFecal indicator bacteria (FIB), including total coliform, fecal coliform (or E. coli), and Enterococcus, have long been used to indicate the contamination of fecal matters in beaches, streams, and lakes (USEPA, 1986, 2002). When the bacterial concentration in a waterbody exceeds the FIB water quality criteria, the waterbody may be identified on the Clean Water Act Section 303(d) list ...

  • Detection of carbaryl in soil

    MATRIX: Soil ANALYTE: Carbaryl RANGE OF DETECTION: 40 to 500 ppb MATERIALS: SDI Carbaryl RaPID AssayÒ kit and Sample Diluent. SDI RaPID PrepÔ Soil Collection Kit (optional). SDI RaPID PrepÔ Extraction Kit: Type II (extraction solution, optional) Reagents: Methanol (pesticide grade), distilled or ...


  • Detection of carbofuran in soil

    MATRIX: Soil ANALYTE: Carbofuran RANGE OF DETECTION: 10 to 500 ppb MATERIALS: Carbofuran RaPID AssayÒ kit and Sample Diluent. Reagents: methanol (pesticide grade), distilled or deionized water. Equipment: reciprocating shaker, plastic bottles (polypropylene or high density polyethylene, 50 or 60 mL) with ...


  • Detection of atrazine, alachlor, cyanazine and metolachlor in soil

    MATRIX: Soil ANALYTES: Atrazine, Alachlor, Cyanazine, and Metolachlor RANGE OF DETECTION: Atrazine: 15-750 ppb Alachlor: 15-750 ppb Cyanazine: 15-450 ppb Metolachlor: 15-750 ppb MATERIALS: RaPID Assay Kit and Sample Diluent Reagents: methanol (pesticide grade), distilled or deionized water. ...


  • Detection of 2,4-D in soil

    MATRIX: Soil ANALYTES: 2,4-D RANGE OF DETECTION: 150 ppb to 7.5 ppm MATERIALS: 2,4-D RaPID AssayÒ Kit and Sample Diluent Reagents: methanol (pesticide grade), distilled or deionized water, glacial acetic acid. Equipment: reciprocating shaker, plastic bottles (polypropylene or high density polyethylene, 50 or 60 mL) ...


  • Detection of carbendazim in soil

    MATRIX: Soil ANALYTE: Carbendazim, a metabolite of benomyl RANGE OF DETECTION: 37.5 to 750 ppb MATERIALS: Benomyl/Carbendazim RaPID Assay kit and Sample Diluent Reagents: methanol (pesticide grade), sodium hydroxide (ACS grade), distilled or deionized water. Equipment: reciprocating shaker, plastic bottles ...


  • A pump-less discrete opto-fluidic chemical spectrophotometry system (DOCSS) for online in situ monitoring of dissolved contaminants in aqueous media

    This paper presents the fabrication of a discrete chemical analyzer system for online monitoring of dissolved ions in water using UV-VIS absorption spectrophotometry. The device is composed of three main components: fluidic, optical, and control. The test cell was designed to also function as a non-invasive volume sensor, and the volume sensing principle was based on light scattering by ...


    By IWA Publishing

  • Detection of pentachlorophenol in soil

    MATRIX: Soil ANALYTES: Pentachlorophenol (PCP) RANGE OF DETECTION: 100 ppb to 10 ppm MATERIALS: Pentachlorophenol RaPID AssayÒ kit and Sample Diluent Reagents: methanol (reagent grade), sodium hydroxide (ACS grade), distilled or deionized water. Equipment: reciprocating shaker, plastic bottles (polypropylene or ...


  • Discrete or Continuous Flow Analysis – which is better?

    A wide variety of factors affect the choice of analytical instrument. These include target workload (samples/hour), variety of chemistries, methods required, bench space, staff availability etc. In the following article Lalicia Potter, Technical Sales & Support Director at SEAL Analytical, examines one of the common decisions facing laboratory managers. As the manufacturer of an ...

  • Trade sustainability impact assessment on the environmental goods agreement - Case Study

    EXECUTIVE SUMMARY On 24 January 2014 at the World Economic Forum in Davos, the EU, together with 13 other WTO members pledged to launch negotiations to liberalise global trade in environmental goods (EGs). The negotiations are employing the Asia-Pacific Economic Cooperation (APEC) list of environmental goods as a starting point with the intent of expanding it to liberalise a "broad ...


    By OZONATOR Industries Limited

  • Real-time TOC tightens effluent control at Greencore

    A food manufacturing facility in Selby has installed a new continuous TOC (Total Organic Carbon) monitor, ‘the BioTector’ which has dramatically improved the site’s capability to refine and improve the plant’s wastewater treatment process. As a result the plant is better able to quickly respond to changes in the influent. Greencore Foods is a leading player in the food ...


  • Large Volume Splitless Injection Using an Unmodified Split/Splitless Inlet and GC-TOFMS for Pesticides and Brominated Flame Retardants

    Abstract Large volume splitless injection for gas chromatography typically requires a special injection port, for example, a programmable temperature vaporizer (PTV), but an alternative setup using concurrent solvent recondensation–large volume splitless injection (CSR-LVSI) and a split/splitless injection port has been reported. This technique was used here, both with and without ...


    By Restek Corporation

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