Mokhoa oa ho lekanya oa lintho tse tiileng tse emisitsoeng: mokhoa oa gravimetric

1. Mokhoa oa ho lekanya oa lintho tse tiileng tse emisitsoeng: mokhoa oa gravimetric
2. Molao-motheo oa mokhoa oa ho lekanya
Sefa sampole ea metsi ka lera la filthara ea 0.45μm, e siee holim'a sefahla 'me u e omise ho 103-105 ° C ho boima bo sa feleng, 'me u fumane lintho tse tiileng tse emisitsoeng ka mor'a ho omisa ho 103-105 ° C.
3. Ho itokisetsa pele ho liteko
3.1, Ovine
3.2 Ho leka-lekana ha tlhahlobo
3.3.Se omisa
3.4.Lera la filthara le na le boholo ba pore ea 0.45 μm le bophara ba 45-60 mm.
3.5, funele ea khalase
3.6.Pompo ea vacuum
3.7 Botlolo ea boima bo nang le bophara bo ka hare ba 30-50 mm
3.8, li-tweezers tse se nang meno tse sephara
3.9, metsi a qhibilihisitsoeng kapa metsi a hloekileng a lekanang
4. Mehato ea tlhahlobo
4.1 Kenya lesela la filthara ka botlolong ea boima bo nang le li-tweezers tse se nang meno, bula sekoahelo sa botlolo, u se ise ka ontong (103-105 ° C) 'me ue omise lihora tse 2, ebe u e ntša' me ue pholile mochesong oa kamore. desiccator, le ho e lekanya.Pheta ho omisa, ho pholisa, le ho bekha ho fihlela boima bo sa khaotseng (phapang pakeng tsa litekanyo tse peli ha e fete 0.5mg).
4.2 Hlakola sampole ea metsi ka mor'a ho tlosa lintho tse tiileng tse emisitsoeng, lekanya 100ml ea sampole e tsoakiloeng hantle 'me u e sefa ka ho monya.Etsa hore metsi 'ohle a fete ka har'a lera la sefe.Ebe o hlatsoa ka makhetlo a mararo ka 10ml ea metsi a hloekisitsoeng nako le nako, 'me u tsoele pele ho monya ho tlosa mesaletsa ea metsi.Haeba sampole e na le oli, sebelisa 10ml ea petroleum ether ho hlatsoa mesaletsa habeli.
4.3 Kamora ho emisa filthara ea ho monya, ka hloko ntša lesela la sefa le jereng SS ebe u le beha ka har'a botlolo ea boima ba 'mele ka boima ba pele bo sa feleng, u e ise ka ontong ebe u e omisa ho 103-105 ° C ka lihora tse 2, ebe u e tsamaisa. ho desiccator, e lumelle hore e pholile ho mocheso oa kamore, 'me u e lekanye, ho omisa khafetsa, ho pholile, le ho lekanya ho fihlela phapang ea boima pakeng tsa litekanyo tse peli ke ≤ 0.4mg.the
5. Bala:
Lintho tse tiileng tse emisitsoeng (mg/L) = [(AB)× 1000×1000]/V
Ka foromo: A--e emisitsoeng e tiileng + lera la sefe le boima ba botlolo (g)
B——Membrane le boima ba botlolo ea boima (g)
V——bolumo ea sampole ea metsi
6.1 Sebaka se sebetsang sa mokhoa Mokhoa ona o loketse ho tsebahatsa lintho tse tiileng tse emisitsoeng metsing a litšila.
6.2 Ho nepahala (pheta-pheta):
Pheta-pheta: Mohlahlobi ea tšoanang ka laboratoring disampole 7 ea boemo ba mahloriso e tšoanang, le kheloha e lekanyelitsoeng (RSD) ea liphetho tse fumanoeng e sebelisetsoa ho hlalosa ho nepahala;RSD≤5% e fihlela litlhoko.