Soluções em Testes e Análises Ambientais

Comprehensive Environmental Monitoring

These application notes highlight how advanced GC-MS techniques tackle the growing challenge of detecting per- and polyfluoroalkyl substances (PFAS) across a range of real-world, complex samples. Due to the diverse nature of PFAS, sensitive, high-resolution separations and complementary data processing tools are required to confidently identify trace-level analytes and uncover previously uncharacterized species. Each app note demonstrates how LECO’s high-resolution GC- and GCxGC-TOFMS platforms enable both targeted detection of known PFAS and non-targeted discovery of previously unknown compounds.

Determinação de PFAS em águas ambientais utilizando DHS-GCxGC-TOFMS

Extract volatile PFAS compounds using Dynamic Headspace in GCxGC analysis.

Fluxo de Trabalho Aprimorado de PFAS com GC-TOFMS de Alto Desempenho

Rastreamento de PFAS conhecidos e desconhecidos em amostras ambientais complexas.

PFAS e Poluentes Ambientais em Poeira Doméstica

O objetivo deste trabalho foi desenvolver uma metodologia para análise não direcionada de um material de referência padrão de poeira (NIST 2585), bem como de amostras de poeira coletadas em ambientes residenciais e de escritório, tanto para poluentes legados quanto emergentes. O método utiliza cromatografia gasosa bidimensional (GCxGC) e espectrometria de massa de alta resolução (HRTOFMS), é abrangente e cobre…

Tracking Trace-Level Contaminants

This series of application notes shows how labs can utilize advanced GC-TOFMS to uncover and measure harmful contaminants in challenging environmental samples—from water and sediments to household dust and wildfire ash. Using techniques such as GCxGC-TOFMS and high-resolution (HR) TOFMS, each study demonstrates how improved separation, sensitivity, and data processing power make it easier to detect trace-level pollutants, including persistent organic pollutants (POPs) and disinfection byproducts.

Análise de Parafinas Cloradas Utilizando GCxGC-HRTOFMS

Household dust is a key indicator of human exposure to persistent organic pollutants such as polychlorinated paraffins (PCPs). This application note presents an improved GCxGC-HRTOFMS approach with ECNI that enhances sensitivity, selectivity, and quantification of SCCPs and MCCPs while minimizing interferences from complex dust matrices.

Determinação de OCPs e PCBs em Sedimentos

Persistent organic pollutants (POPs), such as organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs), pose significant environmental risks due to their toxicity and tendency to bioaccumulate. Monitoring these compounds at ultra-trace levels in sediment is challenging because of the high complexity of the matrix. By combining solid-phase extraction (SPE) with the enhanced separation power of comprehensive…

Rastreamento de Desinfetantes em Água Tratada Afetada por Incêndios Florestais

Chlorine treatment of water can form harmful disinfection byproducts (DBPs), especially when wildfire ash is present. GC-TOFMS with deconvolution enables accurate identification of targeted DBPs and other potential contaminants in ash-impacted water.

Identificação de Subprodutos de Desinfecção em Água Tratada

This application note demonstrates the use of LECO’s Pegasus GC-HRT for non-target analysis of swimming pool and hot tub water. Known and unknown disinfection byproducts are identified using high-resolution deconvolution, accurate mass EI and CI data, and advanced ChromaTOF tools to support comprehensive chemical characterization of complex water matrices.

Rapid, Reliable, and Consistent Analysis for Wastewater

Read our white paper that demonstrates how thermogravimetric analysis (TGA) can simplify and improve the measurement of total solids (TS) and total volatile solids (TVS) in wastewater and sewage sludge. See how automated LECO TGA systems enable fast, reliable analysis of large sample volumes while reducing manual handling and improving precision at VERITAS S.p.A, one of Italy’s largest water treatment providers. By combining automation with standardized methods and ISO-accredited workflows, the lab can generate accurate, real-time data to better manage sludge processes and treatment performance.

Aprimorando a análise de lodo de esgoto com a TGA LECO

One of the most important ways to keep our environment clean and preserve nature for future generations is through water treatment. For this process to be successful, laboratory-based quality control is crucial. This paper describes an example of total solids (TS) and total volatile solids (TVS) determination at an important water treatment facility in Italy.

TOC: Precision, Accuracy, and Reliability Matter

Total organic carbon (TOC) is a key indicator of soil quality, performance, and environmental impact. This application note showcases how LECO’s automated carbon analyzer, the C832, enables accurate measurement of TOC in agricultural soils. It addresses the challenge of separating organic carbon from inorganic carbon, demonstrating workflows for acid digestion and combustion-based methods.

Digestão Ácida para Determinação de Carbono Orgânico Total em Amostras de Rocha

O LECO C832 mede o carbono orgânico total no solo, em rochas e em xisto por meio da macrocombustão, auxiliando na exploração de hidrocarbonetos, na agricultura e no controle de qualidade.