Qhov sib txawv tseem ceeb ntawm pyrethrin thiab permethrin yog pyrethrin yog ib yam khoom ntuj tsim, hos permethrin yog cov khoom siv hluavtaws uas tau tsim hauv chav kuaj.
Ob leeg pyrethrin thiab permethrin tseem ceeb ua tshuaj tua kab. Cov no pab tswj cov kab hauv kev lag luam thiab thaj chaw hauv tsev. Pyrethrins yog ib pawg ntawm cov organic tebchaw uas tau muab los ntawm Chrysanthemum cinerariifolium cog, muaj cov tshuaj tua kab muaj zog los ntawm kev tsom mus rau lub paj hlwb ntawm cov kab. Permethrin yog cov tshuaj thiab tshuaj tua kab uas muag raws li lub npe Nix.
YPyrethrin yog dab tsi?
Pyrethrins yog ib pawg ntawm cov organic tebchaw uas tau los ntawm Chrysanthemum cinerariifolium cog, uas muaj cov tshuaj tua kab muaj zog los ntawm kev tsom mus rau lub paj hlwb ntawm cov kab. Lawm, qhov sib xyaw no tshwm sim hauv cov paj ntawm cov nroj tsuag no, thiab feem ntau nws suav tias yog cov tshuaj tua kab organic. Cov tshuaj tua kab thiab tshuaj tua kab tau paub thiab siv tau ntau txhiab xyoo. Yog li ntawd, lawv zoo li maj mam hloov organophosphates thiab organochlorides ua cov tshuaj tua kab vim tias cov tshuaj tom kawg tau pom tias muaj kev cuam tshuam loj heev thiab pheej ua rau tib neeg.
Daim duab 01: Cov qauv dav dav ntawm Pyrethrin
Hauv xyoo 1924, Tus Kws Tshuaj Hermann Staudinger tau nthuav tawm cov qauv tshuaj pyrethrin. Muaj ob isomers li, pyrethrin I thiab pyrethrin II. Cov no yog cov txheej txheem muaj feem xyuam nrog cov esters uas muaj cov tub ntxhais cyclopropane. Peb tuaj yeem faib cov pyrethrins ua terpenoids. Thaum xav txog biosynthesis ntawm cov khoom no, nws tshwm sim ib txwm muaj nrog ob lub molecules ntawm dimethylallyl pyrophosphate thiab cyclopropane nplhaib los ntawm kev ua ntawm chrysanthemyl diphosphate synthase enzyme.
Peb tuaj yeem xav txog pyrethrins ua cov tshuaj tua kab zoo tshaj plaws hauv khw. Qhov no yog vim lawv sai sai degradation nyob rau hauv ib puag ncig. Txawm li cas los xij, kev siv cov tshuaj no hauv cov khoom xws li tshuaj tua kab thiab tshuaj zawv plaub hau tsiaj tuaj yeem ua rau muaj kev phom sij rau cov tsiaj txhu uas raug rau lawv.
YPermethrin yog dab tsi?
Permethrin yog tshuaj thiab tshuaj tua kab muag raws li lub npe Nix. Nws yog ib qho tseem ceeb raws li ib tug tshuaj nyob rau hauv kev kho mob scabies thiab ntshauv. Peb tuaj yeem siv cov tshuaj no ua tshuaj pleev lossis tshuaj pleev. Raws li cov tshuaj tua kab, peb tuaj yeem muab tshuaj tsuag rau hauv khaub ncaws lossis yoov tshaj cum los tua cov kab uas tawv tawv.
Daim duab 02: Cov qauv tshuaj ntawm Permethrin
Yuav muaj kev phiv ntawm cov tshuaj tua kab no; cov no muaj xws li pob khaus thiab khaus khaus ntawm qhov chaw siv. Txawm li cas los xij, nws zoo li muaj kev nyab xeeb rau kev siv thaum cev xeeb tub. Cov tshuaj no belongs rau tsev neeg ntawm pyrethroids. Raws li kev siv tshuaj, nws tuaj yeem ua los ntawm kev cuam tshuam kev ua haujlwm ntawm cov neurons ntawm cov ntshauv thiab kab mob mites.
Cov tshuaj no tau tshawb pom hauv xyoo 1973. Nws cov qauv tshuaj yog C21H20Cl2O3. Muaj ntau yam kev siv cov tshuaj no hauv kev ua liaj ua teb los tiv thaiv cov qoob loo, tua tsiaj cab cab, tswj kev lag luam thiab cov kab hauv tsev, tiv thaiv kab tawm tsam hauv kev lag luam textile, thiab lwm yam.
Dab tsi yog qhov zoo sib xws ntawm Pyrethrin thiab Permethrin?
- YPyrethrin thiab Permethrin yog cov tshuaj tua kab tseem ceeb.
- Ob leeg muaj txiaj ntsig zoo hauv kev tswj cov kab hauv kev lag luam thiab hauv tsev.
Qhov txawv ntawm Pyrethrin thiab Permethrin yog dab tsi?
Pyrethrins yog ib pawg ntawm cov organic tebchaw muab los ntawm Chrysanthemum cinerariifolium cog muaj cov tshuaj tua kab muaj zog los ntawm kev tsom mus rau cov kab mob paj hlwb. Permethrin yog cov tshuaj thiab tshuaj tua kab uas muag raws li lub npe Nix. Qhov sib txawv tseem ceeb ntawm pyrethrin thiab permethrin yog pyrethrin yog ib yam khoom ntuj tsim, hos permethrin yog cov khoom siv hluavtaws uas tau tsim hauv chav kuaj.
Cov hauv qab no infographic nthuav tawm qhov sib txawv ntawm pyrethrin thiab permethrin hauv daim ntawv tabular rau ib sab ntawm kev sib piv.
Summary – Pyrethrin vs Permethrin
Ob leeg pyrethrin thiab permethrin tseem ceeb ua tshuaj tua kab. Qhov sib txawv tseem ceeb ntawm pyrethrin thiab permethrin yog pyrethrin yog ib yam khoom ntuj tsim, hos permethrin yog cov khoom siv hluavtaws uas tau tsim hauv chav kuaj.
