lead analysis Articles
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Boost Assay Performance
Improve SARS-CoV-2 RT-PCR Assays Improve Automated Workflows and Boost Assay Performance Employing a process optimization approach to assay development involves breaking down the assay workflow into smaller modules, such as a mixing step or a reagent addition step, and then measuring and optimizing each module individually using MVS technology. Once the assay is optimized to its fullest extent, ...
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Heartland transmission and distribution line project - case study
Xi Safety TM Inc was engaged by our client to undertake a eight week evaluation of the safety performances of all contractors and stakeholders on this project. We identified present challenges that were hurdles to successful safety opportunities and performance while developing a new model for implementing corrective actions. Evaluation Phase: an analysis of the existing data, programs and ...
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Biomonitoring of concentrations of platinum group elements and their correlations to other metals
Biomonitoring of Pt, Pd, Pb, Mn, Cu, Fe and Zn was conducted using leaves (two and six months old) of laurel (Laurus nobilis L.) ornamental shrubs grown in 14 sampling sites located on the central green belts of six avenues and streets of Athens. In this biomonitoring, we determined, for the first time in Greece, the concentrations of the new urban "pollutants" Pt and Pd, and we estimated the ...
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Recreational impacts on the environment as an impetus to updating recreational regulations in the Washington State
The Washington State Department of Natural Resources (DNR) uses the Washington Administrative Code (WAC) as the regulations by which the agency manages public lands for Washington State. Originally written in 1970, the part of the WAC that guides recreational public access was suitable for its time. However, as populations grew, new technology has developed and the public now recreates deeper ...
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Surfex: An Essential Incoming Quality Analysis Tool
Abstract A comprehensive incoming quality inspection system is critical for manufacturers to establish and validate quality standards. While visual, dimensional, and functional inspection are common, part cleanliness testing is often overlooked. Identifying excessively dirty parts before product assembly avoids contamination-related early failures from wear, corrosion and other related yield ...
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Use of multi-criteria decision analysis in regulatory alternatives analysis: A case study of lead free solder
Regulators are implementing new programs that require manufacturers of products containing certain chemicals of concern to identify, evaluate and adopt viable, safer alternatives. Such programs raise the difficult question for policymakers and regulated businesses of which alternatives are “viable” and “safer.” To address that question, these programs use ...
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Predicted no effect concentration (PNEC) derivation as a significant source of variability in environmental hazard assessments of chemicals in aquatic systems: An international analysis
Environmental hazard assessments for chemicals are performed to define an environmentally ‘safe’ level at which, theoretically, the chemical will not negatively affect any exposed biota. Despite this common goal, the methodologies in use are very diverse across different countries and jurisdictions. This becomes particularly obvious when international scientists work together on documents with ...
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What maintenance work should be done for waste gas treatment equipment
What are the maintenance work of waste gas treatment equipment? Today, the editor of Jiangsu Feeds Machinery will give you an answer, hoping to help everyone. 1.Emphasize the mutual cooperation of various types of work In production, the normal operation of production is often affected by the auxiliary working errors of waste gas treatment equipment. For example, errors in analysis will lead to ...
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On the thermodynamic stability of metal oxide nanoparticles in aqueous solutions
Divided and ultra-divided systems such as colloidal and nanoparticle dispersions are generally unstable with regard to the size and number of their constituents because the solid-solution interfacial tension, acting as a driving force, leads to a reduction of the surface area to minimise the dispersion free enthalpy. Such phenomenon known as surface energy minimisation induces an increase in ...
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Evaluation of mixing zones in a Latvian–Lithuanian transboundary river basin
The neighbouring countries of Latvia and Lithuania should use common water assessment methodologies and measures for water management in the transboundary rivers according to EU Water Framework Directive, establishing a framework for community action in the field of water policy. However, there are no national and local legislative acts describing how to harmonise water policy and activities ...
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Determination of Trace Elements in Lead for Battery Applications using Atomic Absorption Analysis
Sample and Standard Preparation procedures for Trace Elements in Lead [1] Preparation of Lead (Pb) Samples: Drill Pb metal to make small pieces. Weigh 2.0 grams of these pieces on a balance. Place the sample in a 400ml Pyrex breaker and add 10ml H2O, 2.5 grams of tartaric acid and 7ml HNO3. Warm on a hot-plate until the sample dissolves. Dilute to 100ml in a volumetric flask with water ...
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BeDensi T Series
Tapped Density Meter BeDensi T series Tapped Density Meter Apparatus includes BeDensi T1 (one cylinder), BeDensi T2 (two cylinders) and BeDensi T3 (three cylinders). T2 and T3 can measure Tapped Density for 2 or 3 powder samples simultaneously. BeDensi T series tap density analyzer is compliant per international standard ISO3953: 1993 and the United States Pharmacopeia for drug Tapped Density ...
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Degradation of malachite green by dielectric barrier discharge plasma
Oxidative decomposition of aqueous organic pollutant malachite green (MG) was studied in a dielectric barrier discharge reactor operated under ambient conditions. Total organic carbon content analysis confirmed the mineralization of the pollutant leading to the formation of carbon dioxide, which was confirmed by an infrared analyzer. Typical results indicated that the degradation rate increases ...
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Determination of the feasibility of using a portable x-ray fluorescence (XFR) analyzer in the field for measurement of lead content of sieved soil
Soil samples collected in housing areas with potential lead contamination generally are analyzed with flame atomic absorption spectrometry (FAAS) or other laboratory methods. Previous work indicates that field-portable X-ray fluorescence (XRF) analysis is capable of detecting soil lead levels comparable to those detected by FAAS in samples sieved to less than 125 μm in a laboratory. A ...
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Coveris use the Systech 8001 Oxygen Permeability Analyser to validate the barrier performance of their packaging films
Coveris manufacture flexible and rigid packaging that adds real value to products such as fresh and frozen food products by optimising its protection, freshness and shelf appeal. With more than 8,500 global employees and 60 strategically located facilities, Coveris is dedicated to providing solutions that enhance the safety, quality and convenience of products we use every day. They use the ...
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Permeation analyser provides validation to packaging film barrier performance - Case Study
Established in 2013 by bringing together the 5 smaller groups of Exopack US, Britton Group, Paccor, Paragon Flexibles and Kobusch, Coveris is now one of the world’s leading suppliers of high performance flexible and rigid packaging for the consumer goods and food service sector. With more than 8,500 global employees and 60 strategically located facilities, Coveris is dedicated to providing ...
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ATONA Faraday amplifiers – how low can you go?
If you work in isotope ratio mass spectrometry you probably already know about ATONA, the revolutionary Faraday detector technology. And if you don’t, you should! You can click here to read the basics. In brief, ATONA is a Faraday amplifier system that avoids many of the major disadvantages of traditional resistor-based amplifier systems, in particular avoiding the usage challenges of ...
By Isotopx Ltd
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Permeation analyser provides validation to packaging film barrier performance
Established in 2013 by bringing together the 5 smaller groups of Exopack US, Britton Group, Paccor, Paragon Flexibles and Kobusch, Coveris is now one of the world’s leading suppliers of high performance flexible and rigid packaging for the consumer goods and food service sector. With more than 8,500 global employees and 60 strategically located facilities, Coveris is dedicated to providing ...
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Improved analytical techniques for Carbohydrates, Amino compounds, and Phenols: tools for understanding soil processes
A process-level understanding of soil C and N cycling will be facilitated by accurate measurement of biochemical compounds in soil organic matter. This review summarizes some recent developments in analytical procedures for measuring soil carbohydrates, amino compounds (amino acids and amino sugars), and phenols. The emphasis is on methods for soil carbohydrates and amino compounds involving ...
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Tandem LA-LIBS – All in One Solid Sample Analyzer
Dr. Rick Russo, Executive Chairman of Applied Spectra and a senior scientist at Lawrence Berkeley National Laboratory, shares his thoughts on shifting trend in the world of chemical analysis towards reducing sample preparation and direct solid analysis instrumentation with higher detection sensitivity and expanded elemental coverage. In this article, he discusses the new paradigm for chemical ...
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