An automatic atmospheric ammonia network in the Netherlands set-up and results

Buijsman, E; Aben, Jan; Elzakker, B.G. van; Mennen, M.G.

doi:10.1016/s1352-2310(97)00233-1

Cited by 47 publications

(37 citation statements)

References 14 publications

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“…This is a wet-chemistry system with online analysis, also known as the AMANDA, developed by the Energy Research Foundation of the Netherlands (ECN) that has been adapted for use in a monitoring network (Buijsman et al, 1998). The presence of the AMOR at the Vredepeel station enabled us to compare the RIVM DOAS and miniDOAS measurements to the AMOR measurements.…”

Section: Comparison To Amor Datamentioning

confidence: 99%

Two instruments based on differential optical absorption spectroscopy (DOAS) to measure accurate ammonia concentrations in the atmosphere

et al. 2012

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Abstract. We present two Differential Optical Absorption Spectroscopy (DOAS) instruments built at RIVM: the RIVM DOAS and the miniDOAS. Both instruments provide virtually interference-free measurements of NH 3 concentrations in the atmosphere, since they measure over an open path, without suffering from inlet problems or interference problems by ammonium aerosols dissociating on tubes or filters. They measure concentrations up to at least 200 µg m −3 , have a fast response, low maintenance demands, and a high uptime. The RIVM DOAS has a high accuracy of typically 0.15 µg m −3 for ammonia for 5-min averages and over a total light path of 100 m. The miniDOAS has been developed for application in measurement networks such as the Dutch National Air Quality Monitoring Network (LML). Compared to the RIVM DOAS it has a similar accuracy, but is significantly reduced in size, costs, and handling complexity. The RIVM DOAS and miniDOAS results showed excellent agreement (R 2 = 0.996) during a field measurement campaign in Vredepeel, the Netherlands. This measurement site is located in an agricultural area and is characterized by highly variable, but on average high ammonia concentrations in the air. The RIVM-DOAS and miniDOAS results were compared to the results of the AMOR instrument, a continuous-flow wet denuder system, which is currently used in the LML. Averaged over longer time spans of typically a day, the (mini)DOAS and AMOR results agree reasonably well, although an offset of the AMOR values compared to the (mini)DOAS results exists. On short time scales, the (mini)DOAS shows a faster response and does not show the memory effects due to inlet tubing and transport of absorption fluids encountered by the AMOR. Due to its high accuracy, high uptime, low maintenance and its open path, the (mini)DOAS shows a good potential for flux measurements by using two (or more) systems in a gradient set-up and applying the aerodynamic gradient technique.

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Section: Comparison To Amor Datamentioning

confidence: 99%

Two instruments based on differential optical absorption spectroscopy (DOAS) to measure accurate ammonia concentrations in the atmosphere

et al. 2012

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“…The solution then passes a semi-permeable PFTE membrane, where approximately 30% of the ammonia permeate the membrane and are dissolved in a stream of doubledemineralised water and the ammonium concentration is determined conductometrically. The AMANDA system is used in the Netherlands Air Quality Monitoring Network at 8 sites (Buijsman et al, 1998) as a monitoring version, named AMOR, with extensive control options. Some speci"cations and performances of both instruments are given in Table 1.…”

Section: Ammonia Concentration Monitoring Equipment: Amanda Airrmonimentioning

confidence: 99%

“…In order to evaluate the ammonia policy a network of eight NH stations in the Netherlands equipped with the AMORs was installed in 1992 (Buijsman et al, 1998). The measurement locations are shown in Fig.…”

Section: Ammonia Networkmentioning

confidence: 99%

“…This has to do with the monthly variation in concentration, with a clear early spring maximum due to the regulations that does not allow manure application in winter. Study of the phenomenology of the ammonia concentrations lead to insight in the emissions, transport in conversion processes needed for a thorough understanding of the behaviour of ammonia and its effects (e.g., Aben et al, 1995;Erisman and Bleeker, 1997;Buijsman et al, 1998).…”

Section: Ammonia Networkmentioning

confidence: 99%

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Instrument development and application in studies and monitoring of ambient ammonia

Erisman

2001

Atmospheric Environment

184

108

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During recent years, it has become clear that ammonia is an important gas in relation to di!erent environmental issues, such as acidi"cation, eutrophication, human health and climate change (through particle formation). Therefore, there is a growing need to develop and apply instrumentation suitable for research into emission, dispersion, conversion and deposition of ammonia and ammonium. Recently, several instruments were developed suitable for measuring concentrations in ambient conditions even at very low levels, such as ammonia sensors suitable for monitoring and research, deposition measuring systems and aerosol samplers for on-line measurement of aerosol composition. These instruments have been tested and applied in a number of "eld studies. These studies include dry deposition measurements, ammonium nitrate studies in relation to the (in)direct aerosol e!ect, emission studies and policy evaluation with concentration and deposition monitoring data. The policy evaluation study showed that the measures to reduce ammonia emissions were not as successful as projected beforehand by statistical studies.

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“…The most important advantages of these instruments are practically artefact-free gas handling, and the possibility of reliable and accurate calibration using liquid ammonium-solutions. Such instruments have been used for ambient ammonia monitoring in the Netherlands for decades [20], and similar instruments have been used in a number of measurement campaigns, even though their operation is quite labour intensive and consumes a high amount of chemicals.…”

Section: Non-spectroscopic Analyzersmentioning

confidence: 99%

Metrology for ammonia in ambient air – concept and first results of the EMRP project MetNH3

Pogány

Balslev-Harder²,

Braban

et al. 2015

17th International Congress of Metrology

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An automatic atmospheric ammonia network in the Netherlands set-up and results

Cited by 47 publications

References 14 publications

Two instruments based on differential optical absorption spectroscopy (DOAS) to measure accurate ammonia concentrations in the atmosphere

Two instruments based on differential optical absorption spectroscopy (DOAS) to measure accurate ammonia concentrations in the atmosphere

Instrument development and application in studies and monitoring of ambient ammonia

Metrology for ammonia in ambient air – concept and first results of the EMRP project MetNH3

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