Kev sib raug zoo ntawm sulfuryl fluoride gas concentration thiab warehouse cua nruj

Feem ntau cov fumigants tuaj yeem ua tiav tib yam tshuaj tua kab los ntawm kev tuav lub sijhawm luv luv ntawm qhov siab lossis lub sijhawm ntev ntawm qhov tsis tshua muaj siab. Ob yam tseem ceeb rau kev txiav txim siab cov tshuaj tua kab yog qhov muaj txiaj ntsig zoo thiab lub sijhawm ua haujlwm zoo. Qhov nce hauv qhov concentration ntawm tus neeg sawv cev txhais tau tias qhov nce ntawm tus nqi ntawm fumigation, uas yog kev lag luam thiab siv tau zoo. Yog li ntawd, ncua sij hawm fumigation kom ntau li ntau tau yog ib txoj hauv kev zoo los txo tus nqi fumigation thiab tswj cov kab mob tua kab.

Cov txheej txheem kev ua haujlwm fumigation qhia tias huab cua nruj ntawm lub tsev khaws khoom yog ntsuas los ntawm ib nrab-lub neej, thiab lub sijhawm rau lub siab poob ntawm 500Pa mus rau 250Pa yog ≥40s rau cov tsev khaws khoom tiaj tus thiab ≥60s rau cov tsev khaws khoom ntiav ntiav kom ua tau raws li qhov xav tau ntawm fumigation. Txawm li cas los xij, huab cua nruj ntawm cov tsev khaws khoom ntawm qee lub tuam txhab khaws cia yog qhov tsis zoo, thiab nws nyuaj rau ua kom tau raws li qhov xav tau ntawm huab cua nruj ntawm fumigation. Qhov tshwm sim ntawm cov tshuaj tua kab tsis zoo feem ntau tshwm sim thaum lub sij hawm fumigation txheej txheem ntawm khaws cia nplej. Yog li ntawd, raws li cov huab cua nruj ntawm cov tsev khaws khoom sib txawv, yog tias qhov kev pom zoo ntawm tus neeg sawv cev raug xaiv, nws tuaj yeem ua kom cov kab mob tua kab mob thiab txo tus nqi ntawm tus neeg sawv cev, uas yog qhov teeb meem ceev uas yuav tsum tau daws rau txhua qhov kev ua haujlwm fumigation. Txhawm rau tswj lub sijhawm ua haujlwm tau zoo, lub tsev khaws khoom yuav tsum muaj huab cua nruj, yog li kev sib raug zoo ntawm huab cua nruj thiab cov neeg sawv cev concentration yog dab tsi?

Raws li cov ntaub ntawv tseem ceeb, thaum huab cua nruj ntawm lub warehouse nce mus txog 188s, qhov ntev tshaj plaws concentration ib nrab-lub neej ntawm sulfuryl fluoride yog tsawg dua 10d; thaum huab cua nruj ntawm lub warehouse yog 53s, qhov ntev tshaj plaws concentration ib nrab-lub neej ntawm sulfuryl fluoride yog tsawg dua 5d; Thaum huab cua nruj ntawm lub warehouse yog 46s, qhov luv tshaj ib nrab-lub neej ntawm qhov ntev tshaj plaws concentration ntawm sulfuryl fluoride tsuas yog 2d. Thaum lub sij hawm fumigation txheej txheem, qhov siab dua ntawm sulfuryl fluoride concentration, qhov kev lwj sai dua, thiab qhov lwj ntawm sulfuryl fluoride gas yog sai dua li cov roj phosphine. Sulfuryl fluoride muaj zog permeability tshaj phosphine, uas ua rau ib tug luv luv gas concentration ib nrab-lub neej tshaj phosphine.

Sulfuryl fluoridefumigation muaj cov yam ntxwv ntawm cov tshuaj tua kab sai. Cov kab mob tuag taus ntawm ntau qhov loj khaws cia cov kab tsuag xws li cov kab ntev-horned tiaj tus kab kab, pom-pom kab kab, pob kws weevils, thiab phau ntawv ntshauv rau 48h fumigation yog nruab nrab ntawm 2.0 ~ 5.0g / m'. Yog li ntawd, thaum lub sij hawm fumigation txheej txheem, lubsulfuryl fluorideconcentration yuav tsum raug xaiv kom tsim nyog raws li cov kab kab hauv lub warehouse, thiab lub hom phiaj ntawm cov tshuaj tua kab sai tuaj yeem ua tiav.

Muaj ntau yam uas cuam tshuam rau tus nqi lwj ntawmsulfuryl fluoride gasconcentration nyob rau hauv lub warehouse. Cov huab cua nruj ntawm lub tsev khaws khoom yog qhov tseem ceeb, tab sis nws kuj muaj feem xyuam nrog cov yam xws li hom nplej, impurities, thiab porosity ntawm pawg nplej.