Boron isotopic composition of atmospheric precipitations and liquid–vapour fractionations

Rose-Koga, Estelle; Sheppard, Simon M.F.; Chaussidon, M.; Carignan, Jean

doi:10.1016/j.gca.2006.01.003

Cited by 63 publications

(44 citation statements)

References 36 publications

(84 reference statements)

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“…The authors suggest that much of the gaseous fraction of B may exist as H 3 BO 3 . Rose-Koga et al (2006) data on lichen indicate that the atmospheric residence time of gaseous B is about 16 times that of particulate B, which agrees with previous estimates obtained from rain data (Fogg and Duce 1985) of 19-36 days and 2-6 days for gaseous and particulate B, respectively. Gaseous and particulate anthropogenic contributions may be locally or regionally important.…”

Section: Atmospheresupporting

confidence: 90%

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Boron sources, speciation and its potential impact on health

Kot

2008

Rev Environ Sci Biotechnol

124

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The behaviour of boron (B) and its fate in the environment remains in many respects obscure. The major B sources and fluxes seem to have been identified, although there are many uncertainties about the magnitude and importance of each; published evaluations vary greatly. Little is known about B speciation of living matter-bearing formations, i.e. soils, natural waters, and sediments. Many authors suppose that B in nature occurs only as oxocompounds, although, natural inorganic and organic B compounds and complexes have been described. Moreover, the most common approach to B biogeochemistry in terms of inorganic B compounds (as boric acid and borates) seems to oversimplify the matter. Data on the physiological functions of B are fragmentary and often contradictory. Some data exists on endemic symptoms and diseases among humans and grazing cattle that are supposedly triggered by B abundance in the natural environment. Unfortunately, the published data are scarce and vague. In this paper, we review the up-to date references on B sources, turnover, and speciation in the environment and the element potential impact on health.

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Section: Atmospheresupporting

confidence: 90%

“…Boron is a variable constituent in the atmosphere with concentrations usually between 0.2 and 300 lg l -1 (Fogg and Duce 1985;Miyata et al 2000;Rose-Koga et al 2006). The sources, speciation and sinks of atmospheric B remain a matter of debate.…”

Section: Atmospherementioning

confidence: 99%

Boron sources, speciation and its potential impact on health

Kot

2008

Rev Environ Sci Biotechnol

124

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“…The first source (characterized by high δ 11 B and low NO 3 -/B) is certainly seawater, and they proposed that biomass burning is the most likely second source (characterized by lower δ 11 B and higher NO 3 -/B). Rose-Koga et al (2006) supported this interpretation because the observed decrease in δ 11 B of the precipitation is probably not associated with a Rayleigh distillation process because δD does not decrease (a Rayleigh process is characterized by the boron meteoric water line: δD = 2.6δ 11 B -133). Satake (1986) measured δD in the precipitation samples collected at Toyama on the Japan Sea coast, which is located close to the Nakanoto site (approximately 40 km southeast; Fig.…”

Section: ) Is Associated With a Rayleigh Distillation Process It Ismentioning

confidence: 74%

“…Also, they were lower than those (weighted mean = +41‰) in the French Guiana (Chetelat et al, 2005) but higher than those (median = +16‰) in the UK (Mather and Porteous, 2001). Rose-Koga et al (2006) inferred that the δ 11 B of the precipitation can be related to that of the seawater reservoir by the seawater-vapor fractionation and one or more processes, including (1) the rain-vapor isotopic fractionation, (2) evolution of the δ 11 B of the atmospheric vapor reservoir via condensation-precipitation processes (Rayleigh distillation process), (3) contribution of vapor from the evaporation of seawater aerosols, and (4) contribution of particulate matter from natural and anthropogenic sources. Chetelat et al (2005) reported that a significant correlation between δ 11 B and NO 3 -/B ratio was observed in the French Guiana's precipitation, indicating that boron in the precipitation originates from two sources.…”

Section: ) Is Associated With a Rayleigh Distillation Process It Ismentioning

confidence: 75%

“…The boron concentration and isotopic composition of seawater are nearly constant in all the oceans, being approximately 4.5 µg L -1 and +39.5‰, respectively, although boron isotopes are fractionated largely during seawater evaporation. Rose-Koga et al (2006) reported the deduced seawater-vapor fractionation of +25.5‰. For volcanic emissions, a few data on fumarolic condensates of hydrothermal and volcanic systems have been reported (overall δ 11 B ranges from -9.3 to +21.4‰) (Kanzaki et al, 1979;Nomura et al, 1982;Palmer and Sturchio, 1990).…”

Section: Introductionmentioning

confidence: 99%

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Isotopic evidence of boron in precipitation originating from coal burning in Asian continent

2010

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The boron concentration and isotopic composition (δ 11 B) of precipitation collected from December 2002 to March 2006 at three sites on the Japan Sea coast were measured. Those sites have been considerably affected by the long-range transport of air pollutants from the Asian continent during winter and spring when the airflows from the Asian continent are predominant. The boron concentration in the precipitation increased primarily during winter whereas the δ 11 B decreased during winter or spring. It is assumed that this decrease in δ 11 B is not associated with a Rayleigh distillation process, because the previous δD values of the precipitation collected at a site on the Japan Sea coast did not decrease in the same manner. A weak correlation (r 2 = 0.13-0.24, P < 0.01) was observed between δ 11 B and the nonsea-salt sulfate (nss-SO 4 2-)/B ratio at each site, suggesting that boron in the precipitation originate primarily from two sources. The first source, which is characterized by high δ 11 B and nss-SO 4 2-/B = 0, is seawater. At the northern site, the enrichment factor for boron in the precipitation relative to seawater approached unity during winter. This implies that much of the boron in the precipitation is derived from unfractionated sea salts rather than gaseous boron evaporated from seawater. The second source is characterized by low δ 11 B and high nss-SO 4 2-/B ratio. Most of the nss-SO 4 2-in the precipitation originates from anthropogenic combustion activities in the Asian continent based on the previous model calculations. Coal accounts for a major portion of the total primary energy supply in China. Moreover, coal enriches boron and represents generally negative δ 11 B values. Hence, we propose that the emission of boron from coal burning is the most likely second source. Thus, boron isotopes may be useful as tracers of coal-burning plumes from the Asian continent.

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Global boron cycle in the Anthropocene

Schlesinger

Vengosh

2016

Global Biogeochemical Cycles

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This paper presents a revised and updated synthesis of the biogeochemical cycle of boron at the Earth's surface, where the largest fluxes are associated with the injection of sea‐salt aerosols to the atmosphere (1.44 Tg B/yr), production and combustion of fossil fuels (1.2 Tg B/yr), atmospheric deposition (3.48 Tg B/yr), the mining of B ores (1.1 Tg B/yr), and the transport of dissolved and suspended matter in rivers (0.80 Tg B/yr). The new estimates show that anthropogenic mobilization of B from the continental crust exceeds the naturally occurring processes, resulting in substantial fluxes to the ocean and the hydrosphere. The anthropogenic component contributes 81% of the flux in rivers. The mean residence time for B in seawater supports the use of δ11B in marine carbonates as an index of changes in the pH of seawater over time periods of > 1 Ma.

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Boron isotopic composition of atmospheric precipitations and liquid–vapour fractionations

Cited by 63 publications

References 36 publications

Boron sources, speciation and its potential impact on health

Boron sources, speciation and its potential impact on health

Isotopic evidence of boron in precipitation originating from coal burning in Asian continent

Global boron cycle in the Anthropocene

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