Standard Methods

14 December 1995; accepted 18 December 1995 Abstract A method is described for determination of pesticides in ground water by liquid chromatography combined with mass spectrometry (LC-MS) using atmospheric pressure chemical ionization (APCI). The study demonstrates the sensitivity of the technique, with detection limits for water samples of about 0.001-0.005 /zg/l, corresponding to 50-300 pg injected. Performance data for the method such as recovery, precision and linearity are…

onde os volumes coletados eram proporcionais às vazões horárias no instante da coleta. A coleta e preservação das amostras foram feitas segundo as recomendações do Standard Methods For Examination of Water and Wastewater, 18 th ed. Para a caracterização físico-química das amostras foram utilizadas as técnicas preconizadas no Standard Methods for Examination of Water and Wastewater, 18th ed., com exceção da análise de nitrato, que foi empregado o método espectrofotométrico com adição de…

investigations. It was written to provide the notes for VSN’s course on anova and design in GenStat, but it can be used equally well as a self-learning tool. Starting with the simplest situation, where two different treatments are compared by the standard t-test, straightforward examples will be used to introduce the following concepts. • Analysis ! covering simple to sophisticated situations, explaining ideas such as balance, and introducing advanced features like the use of REML for…

Javier Ariza López1 and Alan David Atkinson Gordo2 Abstract: This work presents an analysis of some standard methodologies for positional accuracy assessment of geographic data bases, taking into account aspects like the statistical formulation, the size of the control sample, the distribution and typology of the control elements, etc. Here we point out some weaknesses of the majority of standards: scarce formalism, inappropriate terminology for dealing with uncertainty, minimum…

1 http://www.cimm.com.br/portal/noticia/material_didatico/6556#.URkieB37JvA Teste de Dureza Rockwell ASTM E18-05e1 Standard Test Methods for Rockwell Hardness and Rockwell Superficial Hardness of Metallic Materials ISO ISO 6508-1:1999 Metallic materials - Rockwell hardness test - Part 1: Test method (scales A, B, C, D, E, F, G, H, K, N, T) ISO 6508-2:1999 Metallic materials - Rockwell hardness test - Part 2: Verification and calibration of testing machines (scales A, B, C, D, E, F,…

calibração de máquinas de medir dureza Vickers • ASTM C1327-03 Standard Test Method for Vickers Indentation Hardness of Advanced Ceramics E92-82(2003)e2 Standard Test Method for Vickers Hardness of Metallic Materials revisão da E92-82(2003)e2 : WK7683 Standard Test Method for Vickers Hardness of Metallic Materials • ISO ISO 6507 (1997) Metallic materials - Vickers hardness test - Part 1: Test method - Part 2: Verification of testing machines - Part…

Food Control 28 (2012) 192e198 Contents lists available at SciVerse ScienceDirect Food Control journal homepage: www.elsevier.com/locate/foodcont Review Development and validation of a method for the determination of sulfonamides in animal feed by modified QuEChERS and LCeMS/MS analysis Renata Pereira Lopes a, *, Érica Eustáquia de Freitas Passos b, Juarez Fabiano de Alkimim Filho b, Eugênia Azevedo Vargas b, Daniella Vasconcellos Augusti b, Rodinei Augusti b, ** a b…

Economy Informatics, 2003 5 Human Resource Management in the Internet Age: e -Recruitment and e-Selection Methods Professor, Ph.D. Constanta BODEA, ec. Vasile BODEA, assistant Mark ZSOLT Academy of Economic Studies, Bucharest The paper presents the main methods used in e-recruitment and e-selection processes. The discussion of e-recruitments and e-selection methods does not, however, negate the importance of more traditional tools, based on the face-to-face interaction or on a…

techstreet.com). This copy downloaded on Thu Apr 12 06:30:26 -0500 2012 by authorized user Ariane Jesus. No further reproduction or distribution is permitted. MSS SP-72-2010 Ball Valves with Flanged or Butt-Welding Ends for General Service Standard Practice Developed and Approved by the Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. 127 Park Street, NE Vienna, Virginia 22180 Phone: (703) 281-6613 Fax: (703) 281-6671 e-mail: info@mss-hq.org…

primeiro a propor um método de classificação para a forma do agregado. Atualmente existem alguns métodos, alguns propostos por alguns estudiosos e outros exigidos por normas como NBR 7809 (ABNT, 2005), EN 933-3 (EM, 1997), ACI E1 (ACI, 2007), British Standard. Testing aggregates, BS 812: part 1(BS, 1975). No desenvolvimento da metodologia da pesquisa, é descrito a caracterização da forma, parâmetros estabelecidos por normas nacionais, internacionais, além de outras referências que…