Environmental Analysis 9 New GC/MS for Extreme Sensitivity
PerkinElmer's (USA) Clarus SQ 8 Gas Chromatography/ Mass Spectrometer (GC/MS) has been received very well. The Clarus SQ 8 GC/MS provides extreme sensitivity to analyse samples accurately, with an 800:1 signal to noise specification. This capability gives environmental and food testing laboratories the ability to detect lower levels of contaminants and impurities.
The Clarus SQ 8 GC/MS delivers superior throughput and productivity by minimising requirements for calibration of instruments and reducing the need for sample preparation and concentration, dramatically improving workflow. PerkinElmer's Clarus SQ 8 GC/MS provides accurate results, which allows environmental and food testing laboratories to comply with new and evolving regulatory requirements that drive compliance in environmental and food applications.
"The quality and safety of food products are major issues worldwide, and accurate analysis of pesticide residues and other contaminants is imperative to monitor the interplay between human and environmental health," said Dusty Tenney, president, Analytical Sciences and Laboratory Services, PerkinElmer. "We work hand-in-hand with the world's leading environmental and food testing labs, and our introduction of the new Clarus SQ 8 GC/MS emphasises our commitment to giving customers the right tools to solve the growing challenges of these markets."
Reader Reply Card No. 29
Nonylphenol & Octylphenol Ethoxylate Standards and Compliance
Environmental exposure from ethoxylates occur from breakdown products of the industrially important alkylphenol(poly)ethoxylates (APEs). Possessing good surfactant properties, APEs have been produced from Nonylphenols (NPs) in commercial quantities and used in detergents and cleaning products as well as emulsifiers in paints, pesticides and textiles. Ninety percent of the APEs produced are nonylphenolethoxylates (NPEs). Octylphenolethoxylates are less commonly used.
The US EPA is working collaboratively with ASTM to develop and validate an analytical method for NPs and APEs. The US EPA will add nonylphenols (NPs) and nonylphenolethoxylates (NPEs) to the Toxic Release Inventory thus requiring companies to report their discharge of the substances into water, air or land. Some U.S. corporations have recognised the dangers of NPEs and voluntarily eliminated NPEs in their products.
The European Union and Canada have already banned the use of NPEs in detergents. According to the European Union’s Directive 76/769/EEC, the use of these compounds is restricted.
AccuStandard (USA) offers many new products for use with the new ASTM environmental methods D7065 and D7485.
Reader Reply Card No. 30
Skalar’s BluVision Discrete Analyser
The BluVision discrete analyser is ideal for the determination of basic colorimetric parameters. It has been designed as an easy-to-use and low maintenance unit for daily routine operation.
Up to 22 different photometric analyses can be performed by using 14 different LED’s for wavelength selection. To achieve accurate low ppb level detection, cuvettes with an optical path length of 15 mm are used. In one run 760 analyses from 200 samples can be determined.
For turbid or colored samples a background correction can be applied. The system prepares its own calibration curves from standards located in 50 special positions which can also hold QC’s. An extra 10 positions are available for priority samples.
The analyser has a state-of the art software package with a flexible set up and extensive QC protocols such as CLP and 21 CFR part 11.
Low level Phosphate analysis on the Skalar San++
Continuous Flow analyser
. This long pathlength flow cell combines an increased optical pathlength of 50 cm with a small sample volume of
125 µl. This makes this application particularly well suited for challenging samples with ultra low concentrations of Phosphate as for instance in seawater, but also for Phosphate analysis in other
aqueous samples such as drinking & surface water. In this configuration the San++
can measure concentrations of down to 0.07 µg Phosphate/L.
The high sensitivity of Phosphate analysis obtained with this new flowcel makes Skalar’s San++ analyser the perfect choice for detecting extremely low levels of Phosphate and other parameters in aqueous samples.
Skalar’s Fully Automatic Cyanide Analyser
Cyanide is a frequently analysed contaminant. The analysis of cyanide is one of the most complex and labor intensive applications for laboratories. Skalar has a wide range of solutions for automatic cyanide analysis currently available.
The San++ continuous flow analyser provides automatic determination, including in-line UV digestion
and distillation, for different cyanide species such as total cyanide, free cyanide, weak acid dissociable cyanide and thiocyanide. All cyanide applications are according to EPA or ISO methodologies.
Complete automation for ST-COD analysis on Skalar’s SP50 and SP1000 Robotic analysers
Skalar is pleased to present the next step in automation for the small scale sealed-tube COD analysis including automatic sample pipetting. This new feature completes the automation of st-COD procedure according to ISO 15705 and EPA 410.4
The analysers consist of a XYZ sample-handling station, a gripper for tube transportation, a thermo reactor for digestion, sample rack for sample loading and cool down, (de)-capping device, a
photometer and a computer for data handling and control. Additional to this Skalar has also automated the sample pipetting.
The SP50 robotic analyser has a sample capacity of 96 samples and the SP1000 model handles up to 160 samples in one batch. Both analysers handle ready- and self-made COD reaction tubes and are compatible with a range of different photometers. Any aqueous sample can be analysed, which includes all sewage and waste waters.
The Skalar robotic analysers are also available for automation of other colorimetric applications. Reader Reply Card No.
31 Reader Reply Card No. 32
Sub ppb detections levels can be achieved for the automated Phosphate method by implementing a special flow cell in the San++
www.envirotech-online.com IET May / June 2012
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