analytical sample filtration Articles

  • A molecular imprinted polymer based sensor for measuring phosphate in wastewater samples

    Phosphate detection in water samples is still completed using colorimetric standard methods, which have a number of disadvantages, to such as being time consuming, requiring filtration, a number of different reagents, frequent calibration and proper disposal of waste chemicals generated. Hence, a simple cost effective analytical method and instrumentation is highly desirable to aid the ...


    By IWA Publishing

  • Removal of Giardia spp. and Cryptosporidium spp. from water supply with high turbidity: analytical challenges and perspectives

    Giardia and Cryptosporidium species are a serious problem if present in water supplies. The removal of these protozoans and the adaptation of existing protocols are essential for supplying drinking water to developing countries. Considering this, the aim of this study is to evaluate, on a bench level, the removal of Giardia spp. cysts and of ...


    By IWA Publishing

  • Low-Flow (Minimal Drawdown) Ground-Water Sampling Procedures

    Untitled Document Background The Regional Superfund Ground Water Forum is a group of ground-water ...


    By Solinst Canada Ltd.

  • Lagoon and Ditch Sediment Dewatering Utilizing Geotube Preliminary Pilot Demonstration - Case Study

    Project Background Geotubes have proven to be a practical and economical way of dewatering a number of domestic and industrial sludges, and sediments, such as river and lake sediments and contaminates, wastewater lagoon sludge, water treatment plant sludge, packinghouse sludges and wood products sludges. The Michigan Department of Environmental Quality (MDEQ) is interested in evaluating ...

  • Detection of chlorpyrifos on whole oats

    MATRIX: Whole grain oats ANALYTE: Chlorpyrifos RANGE OF DETECTION: 15 ppb to 204 ppb MATERIALS: Chlorpyrifos RaPID Assay and Chlorpyrifos Sample Diluent. RaPID Prepä Soil Collection Kit. Reagents: methanol (pesticide grade). Equipment: 13x100 mm glass test tubes; 5.0 mL serological pipet, precision pipet capable ...


  • 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: ...


  • Comparison of methods for the enumeration of Clostridium perfringens spores in water

    Four methods for enumerating Clostridium perfringens spores in water were evaluated: (1) the IMM (Iron Milk Medium) method (MPN); (2) the LS (Lactose Sulfite Broth) method (MPN); (3) the m-CP (membrane filtration Clostridium perfringens Agar) method (membrane filtration); and (4) the TSC (Tryptose Sulfite Cycloserine Agar) method (membrane filtration). The performance of these ...


    By IWA Publishing

  • Sorption of per‐and polyfluoroalkyl substances (PFASs) on filter media: Implications for phase partitioning studies

    Per‐and polyfluoroalkyl substances (PFASs) including perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS) are ubiquitous in the environment. Investigations into their fate and potential phase‐partitioning behaviour require separation of solid from aqueous phases via filtration. However, sorption of aqueous‐phase PFASs on filtration media may lead to underestimation of PFAS ...


    By John Wiley & Sons, Ltd.

  • Detection of captan in soil

    MATRIX: Soil ANALYTE: Captan RANGE OF DETECTION: 8 to 300 ppm MATERIALS: Captan RaPID Assay, Kit and Sample Diluent. Reagents: acetone (pesticide grade) Equipment: reciprocating shaker, plastic bottles (polypropylene or high density polyethylene, 50 or 60 mL) with plastic lined screw caps, filtration apparatus (funnel and ...


  • ChlorAC Buffer

    Introduction Trace analysis of carbamate insecticide residues in water is a routine requirement in the U.S. Since several of the common carbamates — Carbaryl, Oxamyl, Hydroxycarbofuran — are labile in water due to oxidation or hydrolysis, the samples and standards must be preserved in order to obtain valid results. USEPA Method 531.1 specifies pH adjustment, ...


    By Pickering Laboratories, Inc.

  • 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 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 ...


  • Water Treatment Plant (Wtp) Optimization Techniques

    Introduction Given the seemingly ubiquitous, yet episodic nature of pathogen presence in source waters, monitoring and opti-mizmg the performance of water treatment plants is an increasingly important aspect in many suppliers' plans for maintaining w;ater quality . Filtration Plant Optimization (FPO) The Filtration Plant Optimization (FPO) analysis w:as ...


    By Analytical Services, Inc

  • 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 ...


  • 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. ...


  • Biodegradability of Dissolved Organic Nitrogen: Adaptation of the BOD Test

    To prevent eutrophication in receiving waters, many astewater treatment plants are being firected by regulatory agencies to achieve very low levels of total nitrogen (3-4 mg/L TN or lower) in the effluent. Dissolved organic nitrogen (DON) component is included within these total nitrogen limits. The regulations assume that DON is completely biodegradable, and therefore needs to be included in any ...

  • Sensors & Automation to Simplify Bioprocess Operations

    Utilising sensors & automation to simplify bioprocess operations means that more work can be done in less time. By automating the routine tasks carried out in the lab, valuable time can be devoted to more important tasks. Here are two practical examples of automating routine tasks in upstream and downstream bioprocessing with relatively simple instrumentation. Automated ...


    By Broadley-James Ltd

  • 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) ...


  • Quality control considerations for size exclusion chromatography with online ICP-MS: a powerful tool for evaluating the size dependence of metal–organic matter complexation

    Size exclusion chromatography (SEC), which separates molecules based on molecular volume, can be coupled with online inductively coupled plasma mass spectrometry (ICP-MS) to explore size-dependent metal–natural organic matter (NOM) complexation. To make effective use of this analytical dual detector system, the operator should be mindful of quality control measures. Al, Cr, Fe, Se, and Sn ...


    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 ...


Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you