On the automatic chemical determination of atmospheric ozone

Bowen, Irby Gerald; Regener, Victor H.

doi:10.1029/jz056i003p00307

Cited by 38 publications

(20 citation statements)

References 7 publications

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“…A manifold of different types of wet chemical ozone sensors have been developed. Their measuring principle is based on the oxidation-reduction of potassium iodide solution by atmospheric ozone (Cauer, 1935 ;Bowen and Regener, 1951;Ehmert, 1951;Brewer and Milford, 1960;Komhyr, 1969). The free iodine produced, which can be measured by titration or electrolytically, is a measure of the absolute ozone amount.…”

Section: Network and Measurement Methodsmentioning

confidence: 99%

Long-term measurements of surface ozone in the German Democratic Republic

Feister¹,

Warmbt²

1987

J Atmos Chem

113

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The ozone concentration near the earth's surface has been measured at some stations in the GDR for more than 30 yr using the wet chemical method. Even at rural stations the ozone data show a significant linear increase by about 1-3% yr -~ . The ozone increase being stronger in summer than in winter is assumed to be due to photochemical ozone production from increasing anthropogenic emissions of trace gases that are transported over long distances. A weaker ozone increase by only about 0.2% per year was observed in the free troposphere (5.5 km) from balloon-soundings at Lindenberg within the period 1975-1984. If the ozone trends continue, the ozone concentration near the surface and its seasonal amplitude will have doubled around the turn of the century as compared to the mid-fifties.

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Section: Network and Measurement Methodsmentioning

confidence: 99%

Long-term measurements of surface ozone in the German Democratic Republic

Feister¹,

Warmbt²

1987

J Atmos Chem

113

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“…The former belongs to the electrochemical method. Several interesting devices based on this method have already been developed (BowEN et al, 1951;BREWER et al, 1960 ;KOMHYR, 1964). Among them, the so-called titration method developed by BOWEN and REGENER (1951) and is somewhat complex both in construction and in handling before use, compared with the coulometrical method.…”

Section: Introductionmentioning

confidence: 99%

On Various Methods of Measuring the Vertical Distribution of Atmospheric Ozone (III)

Kobayashi¹,

Toyama²

1966

Pap.Met.Geophy

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A device is described that is suitable for use in measuring the vertical distribution of atmospheric ozone up to 30 km. The method is based on the principle of detecting the reaction of ozone with a neutral buffered halide solution coulometrically, wherein free halogen is liberated. It consists of a platinum gauze cathode and an active carbon anode which are immersed in the solution.When the air containing ozone is drawn into the reaction cell at a constant rate, the electrical current dependent on the ozone amount aspirated flows through the output circuit between the two electrodes.The resulting current is impressed on an amplifier, whose output varies with the magnitude of the input current. Data telemetry is accomplished by periodic connection of the sensor to the radiosonde transmitter.The error in the measured value is estimated to be within +2%, provided that the shift in background current is corrected, judging from the comparison of the vertically integrated ozone amount with the total amount of ozone measured by the Dobson's spectrometer method.This device is simple in construction, low in cost, easy to handle and stable in operation.Several successful flight results are discussed from the standpoint of instrumentation.

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“…The primary pmpose of this investigation has been to find a practical physical method for use in the routine measurement of the concentration of ozone 1 'l' his work was sponsored bl' the Army Ordnance Departm en t. 2 Figures in brackots refer to literature references at the end of this p aper.…”

Section: Introductionmentioning

confidence: 99%

“…Bccausc ozone is a highly oxidizing or catalytic agent, thc prcsence of organic particles in the atmosphere, together with the effects of long-wav e solar radiation and increased tempcrature at lowor al titudes, results in the destruction of most of the ozone molecules b elow about 15 to 18 km under normal conditions of atmosph eric circulation [1].2 As a result of the loss of ozone at low altitudes and a decrease in total pressure with altitude, t ue partial pressure of ozonc near the earth's sLldace is only abo ut one-tenth that of its maximum at an al titude of about 22 km . R elative to the total number of molecules of ail' p er unit volume, th ese figures become about 2 and 600 parts per 100 million, rospectively.…”

Section: Introductionmentioning

confidence: 99%

“…{o st of th eTn ar e elaborate, require close attention, and integrate over a relatively long interval of time. A method recently developed by Regener [1 ] h as shortened the interval to abo ut 30 min, as well as making all th e processes of the measurement automatic. In th e past, physical measuremen ts of ozone have been considered, but no rcal progress has been made in this direction, although the high optical absorp tion of ozone between 2,500 and 2,600 A lends itself ideally to th e use of a physical (optical) instrument fo r this purpose.…”

Section: Introductionmentioning

confidence: 99%

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Continuous measurement of atmospheric ozone by an automatic photoelectric method

Stair¹,

Bagg²,

Johnston³

1954

J. RES. NATL. BUR. STAN.

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An au tomatic photoelectric instrument and method for t he continuous meas urement of t he ozone in the earth's atmosphere at low altitudes are described. The method is physical rather t han chemical in character and is based upon t he optical absorption characteristics of ozone in the Hartley and Huggins ul t raviolet bands. Th e ins trument makes use of a lowpressure mercury are, which is situated at a di stance of 1,450 feet from the reco rding s tation t hat emp loys a 1P28 photo mult iplier as a d etector . The lig ht beam is modulated, at 510 cycles per se cond, so that the output of t he photomultiplier is fed into a t uned alternatingcurrent ampllfier and amphfied to the recorder level. By means of a Geneva m ec han is m which changes t he glass filters, the radiant energy from t he lamp is separated into band~ primarily at wavelengths 253 .7, 365.5, a nd 405 .0 millimi cro ns. From the ratios of the de1kctions for t he different spectral regions it is possible to d etermine ozone concentration in t he range from a few te nths of 1 part to many p ar ts per 100 million.

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On the automatic chemical determination of atmospheric ozone

Cited by 38 publications

References 7 publications

Long-term measurements of surface ozone in the German Democratic Republic

Long-term measurements of surface ozone in the German Democratic Republic

On Various Methods of Measuring the Vertical Distribution of Atmospheric Ozone (III)

Continuous measurement of atmospheric ozone by an automatic photoelectric method

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