Chapter 9
Method Development and Sampling Techniques
Desenvolvimento de Métodos Analíticos
An analytical methodology can be divided into four sequential steps: technique, method, procedure, and protocol. A technique is a scientific principle ...
Controle de qualidade
Quality control is one of the three cyclical quality assurance activities that help keep a system under statistical control. Typical quality control ...
Garantia da qualidade
Quality assurance is the overarching term used to describe the activities employed to ensure the proper performance of a system. These activities can be ...
Validação de dados
Method validation is a crucial process in analytical chemistry designed to confirm that a given method consistently produces reliable and high-quality ...
Análise qualitativa
Qualitative analysis is the process of identifying elements, ions, or compounds in an unknown sample. It is the first and most fundamental type of ...
Análise quantitativa
Quantitative analysis is a technique for measuring the amount of specific constituents in a sample. When the sample's composition is unknown, ...
Calibração de instrumentos
Instrument calibration is essential for ensuring that instruments produce accurate and consistent results. It is vital in manufacturing, healthcare, ...
Calibração de vidraria
Accurate calibration of glassware, such as volumetric flasks, pipettes, and burettes, is essential to ensure accurate measurements in the analytical ...
Soluções padrão
Standard solutions refer to solutions with a precisely known concentration or composition. A primary standard is a highly pure, high molar mass, stable ...
Soluções em branco
A blank solution is a solution that does not contain the analyte, or the substance of interest being tested or measured. It is typically prepared using ...
Métodos de amostragem: visão geral
A sample refers to a smaller subset representative of a larger population. In analytical chemistry, studying or analyzing an entire population is often ...
Métodos de amostragem: Tipos de amostra
Sampling materials are classified into three main types: solid, liquid, and gas.
Solid samples include a variety of substances, such as sediments from ...
Planos de amostragem
Sampling is a crucial step in analytical chemistry, allowing researchers to collect representative data from a large population. Common sampling methods ...
Preparação de amostra para análise: visão geral
Sample preparation is an essential step in the analytical process. It involves preparing a sample so that it can be analyzed accurately. The goal is to ...
Preparação de amostras para análise: técnicas avançadas
Accurate analysis of complex samples often requires advanced preparation techniques to achieve reliable and reproducible results. Samples containing ...
Manuseio de amostras
Transportation of samples from the collection point to the laboratory, as well as storage and preservation techniques, are crucial for maintaining sample ...
Contaminantes e erros
Effective sample preparation is crucial for accurate and reliable laboratory analysis. During this process, two significant sources of error can arise: ...
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