A new technique for online measurement of total and water-soluble copper (Cu) in coarse particulate matter (PM). (April 2015)

• Record Type: Journal Article
• Authors: Wang, Dongbin; Shafer, Martin M.; Schauer, James J.; Sioutas, Constantinos
• Is Part Of: Environmental pollution. Volume 199(2015)
• Page Start: 227
• Page End: 234
• Publication Date: 2015-04
• Subjects: Online Cu measurement -- Copper ISE -- Modified Biosampler -- Coarse PM; Pollution -- Periodicals; Pollution -- Environmental aspects -- Periodicals; Environmental Pollution -- Periodicals; Pollution -- Périodiques; Pollution -- Aspect de l'environnement -- Périodiques; Pollution -- Effets physiologiques -- Périodiques; Pollution; Pollution -- Environmental aspects; Periodicals; Electronic journals; 363.73
• DOI: 10.1016/j.envpol.2015.02.006
• Languages: English
• ISSNs: 0269-7491

Abstract

Abstract: This study presents a novel system for online, field measurement of copper (Cu) in ambient coarse (2.5–10 μm) particulate matter (PM). This new system utilizes two virtual impactors combined with a modified liquid impinger (BioSampler) to collect coarse PM directly as concentrated slurry samples. The total and water-soluble Cu concentrations are subsequently measured by a copper Ion Selective Electrode (ISE). Laboratory evaluation results indicated excellent collection efficiency (over 85%) for particles in the coarse PM size ranges. In the field evaluations, very good agreements for both total and water-soluble Cu concentrations were obtained between online ISE-based monitor measurements and those analyzed by means of inductively coupled plasma mass spectrometry (ICP-MS). Moreover, the field tests indicated that the Cu monitor could achieve near-continuous operation for at least 6 consecutive days (a time resolution of 2–4 h) without obvious shortcomings. Highlights: A novel only PM sampling and Cu measuring technology is developed. Very good particle collection efficiency for coarse PM is observed. Excellent agreement is obtained between Cu ISE and offline ICP-MS measurements. The new system can be continuously operated for at least 6 consecutive days. Abstract : A new technique for online measurements of Cu in coarse PM is described.