Sampling, Pollutant Analysis, and Reporting
Comprehensive air quality sampling, laboratory analysis, and data reporting services that deliver accurate, defensible pollutant measurements for regulatory compliance, source characterization, and air quality assessment. From filter-based sampling to advanced chemical speciation, we provide the analytical expertise and quality assurance needed for credible environmental monitoring programs.
Precision Analytical Services
Accurate, defensible air quality data begins with proper sample collection, careful laboratory analysis, and rigorous quality assurance. Whether characterizing ambient air quality, identifying pollution sources, supporting health studies, or demonstrating regulatory compliance, the integrity of analytical results determines the credibility of conclusions and the effectiveness of decisions. Air pollutant sampling and analysis encompasses a diverse array of techniques—from filter-based PM2.5 sampling for chemical speciation to canister sampling for volatile organic compounds, from continuous gas analyzers to passive diffusion samplers. Each method follows established protocols (EPA, NIOSH, ISO) ensuring data quality objectives are met for detection limits, precision, accuracy, and comparability. Proper chain of custody, documented sampling procedures, field and laboratory quality control, and comprehensive data validation are essential for producing data that withstands scientific and legal scrutiny.
Henddu provides comprehensive sampling, analysis, and reporting services through partnerships with accredited laboratories and our own field sampling expertise. We design sampling programs tailored to project objectives, coordinate sample collection following standard operating procedures, manage chain of custody and laboratory submittal, oversee analytical quality assurance, and deliver clear, actionable reports that meet regulatory and technical requirements. Our analytical capabilities span the full suite of air quality measurements including PM2.5/PM10 gravimetric mass and chemical speciation (ions, elements, carbon), gaseous pollutants (criteria and air toxics), volatile and semi-volatile organic compounds, metals analysis, and specialized measurements for source characterization. We work with ISO 17025 accredited laboratories employing EPA-approved and NIOSH-certified methods, ensuring data quality meets stringent regulatory standards. From sample planning through final data deliverables with full quality documentation, we provide the analytical services that transform field samples into credible, decision-ready air quality information.
Our Analytical Capabilities
PM2.5/PM10 Gravimetric & Speciation
Filter-based particulate matter mass determination and comprehensive chemical speciation including water-soluble ions (IC), elements (XRF, ICP-MS), organic and elemental carbon (TOT/TOR), and organic molecular markers for source apportionment studies.
Gaseous Pollutant Analysis
Measurement of criteria air pollutants (O₃, NO₂, SO₂, CO) using continuous analyzers and passive samplers. Air toxics analysis including carbonyls (aldehydes/ketones via DNPH), volatile organic compounds (canisters/sorbent tubes with GC-MS/FID), and hydrogen sulfide.
Metals & Trace Elements
Comprehensive metals analysis via XRF for rapid multi-element screening and ICP-MS for ultra-trace determination. Speciation of metals including hexavalent chromium, mercury, and lead. Support for health risk assessments and air toxics programs.
Organic Compound Analysis
VOC and SVOC analysis using thermal desorption, solvent extraction, and chromatographic techniques. Polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), dioxins/furans, and pesticides for comprehensive air toxics characterization.
Quality Assurance & Data Validation
Comprehensive QA/QC program including field blanks, laboratory blanks, matrix spikes, replicate analyses, and certified reference materials. Full data validation following EPA and NIOSH protocols with precision, accuracy, and detection limit verification in all reports.
Custom Reporting & Data Management
Tailored data reports meeting client and regulatory specifications including electronic data deliverables (EDD), summary statistics, QA/QC narratives, chain of custody documentation, and instrument calibration records. Secure data portal access and long-term archival.
Value of Professional Laboratory Services
- Generate legally defensible data meeting regulatory requirements through ISO 17025 accredited laboratory analysis
- Achieve detection limits sufficient for health risk assessment and regulatory compliance monitoring
- Ensure data quality and credibility through comprehensive QA/QC protocols and documented chain of custody
- Access multi-parameter analysis capabilities covering complete air quality characterization needs
- Support source apportionment and forensic investigations with comprehensive chemical speciation
- Reduce project costs and timeline uncertainty through reliable turnaround and expert project management
- Enable air quality modeling, health studies, and policy development with traceable, validated data
- Demonstrate scientific rigor and due diligence to regulators, stakeholders, and legal proceedings
Our Sampling & Analysis Approach
Program Design & Method Selection
We collaborate with you to define project objectives, data quality objectives (DQOs), and analytical requirements. Method selection considers target analytes, detection limits, sampling duration, regulatory specifications, and budget. Preparation of sampling and analysis plans (SAP), quality assurance project plans (QAPP), and standard operating procedures (SOPs) establishes the technical framework.
Field Sampling & Chain of Custody
Deployment of appropriate sampling equipment (FRM/FEM samplers, canisters, sorbent tubes, passive samplers) with documented operating procedures. Collection of field blanks, trip blanks, and duplicates as required by QA protocols. Strict chain of custody procedures from collection through laboratory delivery ensuring sample integrity and traceability.
Laboratory Analysis & QC
Sample analysis by ISO 17025 accredited laboratories using EPA-approved and NIOSH-certified methods. Concurrent analysis of laboratory quality control samples including method blanks, laboratory control samples (LCS), matrix spikes, and duplicates. Instrument calibration verification and performance checks throughout analytical batches.
Data Validation & Quality Review
Multi-level data review including laboratory instrument review, QA officer validation, and project manager technical review. Verification of QC sample results against acceptance criteria, calculation checks, detection limit confirmation, and flagging of qualified data. Documentation of data quality in validation reports.
Reporting & Data Delivery
Preparation of comprehensive analytical reports including summary tables, QA/QC summaries, method descriptions, and data qualifiers. Electronic data deliverables in client-specified formats. Full data packages with instrument outputs, calibration records, and chain of custody available upon request. Secure online data portal access for real-time results review.
Get Accurate, Defensible Air Quality Data
Partner with Henddu for comprehensive sampling, analysis, and reporting services that deliver the data quality your project demands.
Request Analytical Services