Use of sulfuryl fluoride as an alternative fumigant to methyl bromide in export log fumigation

Zhang, Z.

doi:10.30843/nzpp.2006.59.4545

Cited by 5 publications

(7 citation statements)

References 4 publications

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“…Woodward & Schmidt (1995) showed in vitro that fumigation using sulfuryl fluoride at 80 g/m 3 for 48 hours effectively inhibited Ceratocystis fagacearum. A similar study done by Zhang (2006)…”

Section: In Vitro Inhibition Rate Of Sulfuryl Fluoride Against Aspergsupporting

confidence: 63%

Efficacy of Sulfuryl Fluoride as a Fumigant against Aspergillus niger on Corn Seeds

Panjaitan¹,

Salbiah²,

Hadi³

et al. 2020

JPTI

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The importation of corn seeds may inadvertently introduce seed-borne fungi like Aspergillus niger. One potential method to control this pathogen was fumigation with sulfuryl fluoride. The objectives of this applied research were to obtain effective concentration and exposure time of sulfuryl flouride as a fumigant to control seedborne fungi and to its physiological impact on corn seeds. Aspergillus niger was isolated from corn seed samples, grew it in potato dextrose agar, and used it for in vitro studies. Parameters observed were isolates’ growth inhibition. In vivo studies were conducted using corn seed samples infected by Aspergillus niger. Sulfuryl fluoride was applied at the concentration of 30, 40, 50, and 60 g/m3 and 24, 48, 72, and 96 hour of exposure time. Results showed that sulfuryl fluoride concentration of 40 g/m3 for 48 hours at 26-32°C is the only effective concentration against A. niger in vitro but all of the treatment did not significantly affect A. niger in vivo. Concentration of 30, 40, 50, 60 g/m3 for 24 hours does not affect the quality of the seed.

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Section: In Vitro Inhibition Rate Of Sulfuryl Fluoride Against Aspergsupporting

confidence: 63%

Efficacy of Sulfuryl Fluoride as a Fumigant against Aspergillus niger on Corn Seeds

Panjaitan¹,

Salbiah²,

Hadi³

et al. 2020

JPTI

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“…Sulfuryl fluoride (SO 2 F 2 ) is used increasingly around the world as a fumigant to replace methyl bromide, owing to its zero ozone depletion potential . However, as a fumigant, the toxicity of SO 2 F 2 must be taken into account.…”

Section: Introductionmentioning

confidence: 99%

“…Sulfuryl fluoride (SO 2 F 2 ) is used increasingly around the world as a fumigant to replace methyl bromide, owing to its zero ozone depletion potential. 1 However, as a fumigant, the toxicity of SO 2 F 2 must be taken into account. Sulfuryl fluoride is a strong atmospheric greenhouse gas of which the global warming potential (GWP) is 4780 times higher than that of carbon dioxide, and the globally averaged atmospheric lifetime is 36 years.…”

Section: Introductionmentioning

confidence: 99%

Decomposition Treatment of SO₂F₂ Using Packed Bed DBD Plasma Followed by Chemical Absorption

Nie

Zheng

Liang

et al. 2013

Environ. Sci. Technol.

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The technology of packed bed dielectric barrier discharge (DBD) plasma followed by a chemical absorption has been developed and was found to be an efficient way for decomposition treatment of sulfuryl fluoride (SO2F2) in simulated residual fumigant. The effects of energy density, initial SO2F2 concentration, and residence time on the removal efficiency of SO2F2 for the DBD plasma treatment alone were investigated. It was found that the SO2F2 could be removed completely when initial volume concentration, energy density, and residence time were 0.5%, 33.9 kJ/L, and 5.1 s, respectively. The removal mechanism of SO2F2 in the packed bed DBD reactor was discussed. Based on the detailed analysis of SO2F2 molecular stability and its exhaust products in the DBD plasma reactor, it was concluded that the energetic electrons generated in the packed bed DBD reactor played a key role on the removal of SO2F2, and the major decomposition products of SO2F2 detected were SO2, SiF4, and S (Sulfur). Among these products, SiF4 was formed by the F atom reacted with the filler-quartz glass beads (SiO2) in the packed bed DBD reactor. Aqueous NaOH solution was used as the chemical absorbent for the gaseous products of SO2F2 after plasma pretreatment. It was found that the gaseous products in the plasma exhaust could be absorbed and fixed by the subsequent aqueous NaOH solution.

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“…• In respect to insects, concerns exist on the efficacy of SF on some life stages of insects, in particular on the observed high tolerance of eggs Zhang, 2006), to the point at which SF fumigation of US logs was rejected by China in 2013 (Armstrong et al, 2014).…”

Section: 1mentioning

confidence: 99%

“…As mentioned in the Dossier: the doses proposed in the systems approach should be sufficient to eliminate all life stages of timber‐infesting insects in the fumigated oak logs, including potential vectors of the oak wilt fungus. However, uncertainty should be raised in case of wood boring insect species, given the absence of studies on infested commercial sized logs, where the penetration of the fumigant could not be able to reach the deepest layers of the log within the exposure time and therefore the insect. In respect to insects, concerns exist on the efficacy of SF on some life stages of insects, in particular on the observed high tolerance of eggs (Mizobuchi et al., 1996; Soma et al., 1996; Zhang, 2006), to the point at which SF fumigation of US logs was rejected by China in 2013 (Armstrong et al., 2014). In terms of number of sapwood locations positive to the pathogen after treatments, the efficacy of SF against B. fagacearum is lower than that of MB (Yang et al., 2019).…”

Section: Evaluation Of Risk Reduction Options Proposed In a Systems Approachmentioning

confidence: 99%

Commodity risk assessment of oak logs with bark from the US for the oak wilt pathogen Bretziella fagacearum under an integrated systems approach

Bragard¹,

Dehnen‐Schmutz²,

Serio³

et al. 2020

EFS2

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The European Commission submitted to the EFSA Panel on Plant Health a Dossier by USDA proposing a systems approach to mitigate the risk of entry of Bretziella fagacearum to the EU when trading oak logs with bark from the USA . Due to the forthcoming ban of methyl bromide ( MB ), the Dossier indicates sulfuryl fluoride ( SF ) as the substitute fumigant for this commodity. After collecting additional evidence from USDA , EU NPPO s, external experts and the published literature, the Panel performed a quantitative assessment on the likelihood of pest freedom for B. fagacearum at the point of entry in the EU , comparing the proposed systems approach with those already implemented by Commission Decision 2005/359/ EC . The Panel provided also a non‐quantitative assessment for all risk reduction options ( RRO s) proposed to be undertaken in the EU , from the point of entry to processing at the sawmill. The quantitative assessment until the EU point of entry, based on experts’ judgement, indicated that: i) the most effective import option remains the current one with MB (95% certainty that between 9,573 and 10,000 containers per 10,000 would be free of B. fagacearum ), followed by that with SF (95% certainty that between 8,639 and 10,000 containers per 10,000 would be free of B. fagacearum ) and, last, by the other existing option based on delivering white oak logs in certain periods of the year to certain regions of the EU without fumigation (95% certainty, between 7,803 and 10,000 containers per 10,000). RRO s proposed to be undertaken in the EU are expected to further reduce the risk of establishment of B. fagacearum , should these RRO s be regulated, correctly implemented and checked by NPPO s. A wood pathway analysis is needed to quantitatively assess the importance of each measure and to optimise regulatory actions and risk management efforts.

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Use of sulfuryl fluoride as an alternative fumigant to methyl bromide in export log fumigation

Cited by 5 publications

References 4 publications

Efficacy of Sulfuryl Fluoride as a Fumigant against Aspergillus niger on Corn Seeds

Efficacy of Sulfuryl Fluoride as a Fumigant against Aspergillus niger on Corn Seeds

Decomposition Treatment of SO₂F₂ Using Packed Bed DBD Plasma Followed by Chemical Absorption

Commodity risk assessment of oak logs with bark from the US for the oak wilt pathogen Bretziella fagacearum under an integrated systems approach

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Use of sulfuryl fluoride as an alternative fumigant to methyl bromide in export log fumigation

Cited by 5 publications

References 4 publications

Efficacy of Sulfuryl Fluoride as a Fumigant against Aspergillus niger on Corn Seeds

Efficacy of Sulfuryl Fluoride as a Fumigant against Aspergillus niger on Corn Seeds

Decomposition Treatment of SO2F2 Using Packed Bed DBD Plasma Followed by Chemical Absorption

Commodity risk assessment of oak logs with bark from the US for the oak wilt pathogen Bretziella fagacearum under an integrated systems approach

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Decomposition Treatment of SO₂F₂ Using Packed Bed DBD Plasma Followed by Chemical Absorption