Performance Characteristics of Instrumental Methods for Monitoring Sulfur Dioxide

Rodes, Charles; Palmer, HF; Elfers, LA; Norris, CH

doi:10.1080/00022470.1969.10466525

Cited by 8 publications

(3 citation statements)

References 3 publications

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“…Schematic representation of the sensing region of conductometric cell: (A) mixed-bed ion exchanger, (B) Lucite cell body, (C) thin water layer, (D) platinized gold conductivity electrodes, (E) gas-porous Gore-Tex membrane, (F) polypropylene support screen. The actual cell conductance, S, is proportional to k; therefore S2 = (A / e)2(KpKa)PS02 (9) where is the cell constant (cm"1) and A = 10"3( + + XHSOg ). Equation 9holds for any gas that dissolves in water to form an acid or base which is weakly dissociated.…”

Section: Theorymentioning

confidence: 99%

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Conductometric sensor for parts per billion sulfur dioxide determination

Symanski¹,

Bruckenstein²

1986

Anal. Chem.

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Section: Theorymentioning

confidence: 99%

“…The limit of sensitivity of these instruments averages about 50 ppb (8), and they have response times in the range 0.5-6 min (1). All the devices require both air flow (0.25-5.0 L min"1) and absorbing reagent flow (0.7-15 mL min"1) (9). The absorbing solution of hydrogen peroxide/ sulfuric acid is stable for a maximum period of about 2 weeks (10).…”

mentioning

confidence: 99%

Conductometric sensor for parts per billion sulfur dioxide determination

Symanski¹,

Bruckenstein²

1986

Anal. Chem.

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“…To obtain estimates of the range of S02 concentration found in the Palmerton air basin, instantaneous values of S02 were measured with a Scientific Industries sulfur dioxide monitor (Rodes et al 1969). Weather conditions were recorded for the 15 days when measurements were made.…”

Section: Pollution Factorsmentioning

confidence: 99%

Influence of Effluents from a Zinc Factory on Lichens

Nash¹

1975

Ecological Monographs

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Lichen species richness and abundance are reduced by approximately 90% in lichen communities near a zinc smelter at Lehigh Water Gap in comparison with the lichen communities of Delaware Water Gap. The principal cause of the impoverished lichen flora in the Lehigh Water Gap area is probably high concentrations of zinc. Of the non—pollution and pollution factors considered, only abnormal soil concentrations of zinc and cadmium extend beyond the limits of the lichen impoverishment zone. Because Zn is present in concentrations generally 100 times higher than that of Cd and because Cd is experimentally shown to be no more toxic to lichens than is Zn, it is probable that Zn is the more important, detrimental factor to lichens in the Palmerton area. Near the smelters, Zn, Cd and sulfur dioxide are all present in sufficiently high concentrations to be detrimental to lichen growth and survival. However, at the perimeter of the lichen—impoverished zone, only Zn is present in high enough concentrations to be phytotoxic. Although microclimatic alteration in forested areas near Palmerton may be sufficiently great to be a stress for a few lichen species that are adapted to shaded conditions, no microclimatic differences were demonstrable between Delaware and Lehigh Water Gaps for open habitats where most lichen species normally occur in this area. Variations in such factors as lichen geographical range, climate, substrate composition and abundance, and fire history are probably of negligible importance in explaining the reduction in lichen numbers or abundance in Lehigh Water Gap.

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Electroanalytical applications in occupational and environmental health

Ashley

1994

Electroanalysis

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Electroana1:Tical chemistry has been used for years in the occupational and environmental health fields. Portable sensors and analytical devices based on electrochemical (EC) methods are commonly used on-site in the workplace. Laboratory EC methods also have been used extensively for the analysis of industrial hygiene and related samples. Recent advances in electroanal>-tical methodolog may lead to new analytical applications in the occupational health arena, both in the laboratory as well as on-site in the xvorkplace. Applications in heavy metals analysis, analysis for inorganic and organic species, and bioanalysis are exemplified. This article provides an overview of the history of EC analysis for industrial hygiene purposes, and also summarizes current and newly developed applications of electroanaljdcal methods in occupational and environmental health.

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Performance Characteristics of Instrumental Methods for Monitoring Sulfur Dioxide

Cited by 8 publications

References 3 publications

Conductometric sensor for parts per billion sulfur dioxide determination

Conductometric sensor for parts per billion sulfur dioxide determination

Influence of Effluents from a Zinc Factory on Lichens

Electroanalytical applications in occupational and environmental health

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