Qhov taw qhia Dithizone, feem ntau hu ua lead reagent, yog qhov siv dav tshaj plaws hauv cov xim reagent hauv colorimetric tsom xam. Nws tuaj yeem siv los txiav txim siab taug qab cov hlau hnyav xws li Pb2+, Hg2+, Zn2+, Cd2+, thiab lwm yam. Nws cov mis molecular yog C6H5NHNHCSN=NC6H5. Cov tsos yog xim liab dawb crystalline hmoov. Tsis yooj yim rau yaj hauv dej thiab inorganic acids. Soluble nyob rau hauv chloroform thiab carbon tetrachloride, nrog chloroform muaj ntau dua solubility thiab cov tshuaj tshwm ntsuab. Me ntsis soluble hauv hydrocarbon solvents. Ib qho active hydrogen atom nyob rau hauv lub dithizone molecule yog hloov los ntawm ib tug hlau, thiab cov nitrogen atom tsim ib tug kev sib koom tes daim ntawv cog lus nrog cov hlau ion, tsim ib tug chelate compound. Cov tshuaj zoo li txiv kab ntxwv lossis liab, thiab cov tshuaj tiv thaiv zoo heev. Yooj yim rau oxidized los ntawm huab cua, tuaj yeem tiv thaiv los ntawm kev ntxiv sulfur dioxide aqueous tov.
|
Tshuaj Formula |
C9H7 NPO 2 |
|
Exact Mass |
161.05 |
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Molecular Luj |
161.16 |
|
m/z |
161.05 (100.0%), 162.05 (9.7%) |
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Elemental Analysis |
C, 67.08; H, 4.38; N, 8.69; O, 19.85 |
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Daim ntawv |
Crystalline |
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Xim |
Cov hmoov dub |
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Melting point |
168℃(lub kaum hli ntuj) (lit.) |
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Boiling point |
376.1 ± 25.0℃(Tshaj tawm) |
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Qhov ntom |
1.2578 (zeeg) |
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Acidity coefficient (pKa) |
PK1: 4.50; pK2: 15 (25 degree) |
|
Flash point |
>230℃F |
|
Refractive Index |
1.5700 (kwv yees) |
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Qhov taw qhia Dithizone(tshwj xeeb lub npe diphenylthiocarbazone, molecular mis C ₁∝ H ₁₂ N ₄ S) yog cov xim dub crystalline hmoov nrog cov khoom siv tshuaj lom neeg: yooj yim soluble hauv chloroform thiab carbon tetrachloride (kev daws teeb meem ntsuab), me ntsis soluble hauv cawv, thiab yuav luag insoluble hauv dej; Cov sulfur thiab nitrogen atoms hauv nws cov qauv molecular tuaj yeem tsim cov chelates ruaj khov nrog ntau yam hlau ions, nrog rau kev hloov xim tseem ceeb. Cov yam ntxwv no ua rau nws siv dav hauv cov haujlwm xws li kev tshuaj ntsuam chemistry, kev tswj hwm ib puag ncig, kev tsim khoom lag luam, thiab kev tshawb fawb biomedical.
Analytical Chemistry: Ib "Sensitive Probe" rau Heavy Metal Detection
Nws daim ntawv thov tseem ceeb yog nyob rau hauv qhov zoo thiab kev tsom xam ntawm cov hlau hnyav ions. Cov chelates tsim ntawm nws thiab cov hlau ions muaj cov xim ci, kev ruaj ntseg siab, thiab ua raws li Beer txoj cai. High rhiab heev nrhiav tau tuaj yeem ua tiav los ntawm txoj kev colorimetric.
Nws muaj kev xaiv siab heev rau cov hlau lead ions (Pb ² ⁺) thiab tuaj yeem tsim cov txiv kab ntxwv liab complexes nrog rau qhov rhiab heev txog micrograms (nrhiav txwv ntawm 0.01 μ g / mL). Hauv kev saib xyuas ib puag ncig, cov txheej txheem dithizone chloroform yog dav siv los tshuaj xyuas cov kuab paug hauv dej, av, thiab zaub mov. Piv txwv li, Suav tus qauv GB 5009.12-2017 teev cov kev siv dithizone colorimetric txoj kev los txiav txim cov ntsiab lus txhuas hauv cov zaub mov. Cov kauj ruam ua haujlwm suav nrog cov qauv kev zom zaub mov, kev tsim xim ntawm cov tshuaj dithizone, thiab ntsuas nrog lub spectrophotometer. Txoj kev no tuaj yeem tshem tawm qhov cuam tshuam ntawm tooj liab, zinc, thiab lwm yam ions hauv qab pH 8.5-9.0.
Multi hlau ion stepwise nrhiav kom tau
Los ntawm kev tswj cov tshuaj tiv thaiv xws li tus nqi pH thiab hom npog tus neeg sawv cev, kev tshawb nrhiav cov txheej txheem ntawm ntau cov hlau ions tuaj yeem ua tiav.
Mercury ion (Hg ² ⁺): Nyob rau hauv acidic tej yam kev mob ntawm pH 1-2, nws tsim ib tug liab complex nrog mercury thiab yog siv rau kev soj ntsuam mercury muaj kuab paug nyob rau hauv cov dej khib nyiab.
Copper ion (Cu ² ⁺): Nyob rau hauv acetic acid buffer tov nrog pH 4-5, nws tsim ib tug daj ntsuab complex nrog tooj liab, uas yog haum rau kev soj ntsuam cov nyhuv ntawm electroplating dej khib nyiab.
Zinc ion (Zn ² ⁺): Hauv cov tshuaj ammonia tsis nrog pH 9-10, nws tsim cov paj liab nrog zinc thiab feem ntau yog siv rau kev txheeb xyuas cov alloy.
Nws tuaj yeem siv los ua qhov taw qhia kawg rau kev sib xyaw ua ke, piv txwv li, hauv EDTA titration txoj kev los txiav txim siab cobalt (Co ² ⁺), cov tshuaj ua ntej qhov kawg ntawm titration yog xim liab ntawm dithizone cobalt complex. Thaum kawg, EDTA ntes cov cobalt ions, thiab cov xim tov hloov mus rau xiav dub xim ntawm dithizone nws tus kheej, qhia txog kev ua tiav ntawm titration.
Environmental Governance: Precise Adsorbents for Heavy Metal Pollution
Cov txheej txheem ib txwm siv los kho cov dej khib nyiab hnyav, xws li nag lossis daus thiab adsorption, raug kev txom nyem los ntawm cov nqi siab thiab kev xaiv tsis zoo. Txawm li cas los xij, los ntawm kev hloov kho kev ua haujlwm, cov ntaub ntawv xaiv adsorption tuaj yeem npaj tau, txhim kho kev kho mob zoo.
Dithizone graft chelate gel
Patent CN103801271B nthuav tawm txoj kev npaj ntawm graft gel nrog polyacrylamide raws li matrix thiab dithizone raws li kev ua haujlwm monomer: yaj cov polyacrylamide gel hauv dej distilled, kho cov pH rau 9, ntxiv cov tshuaj formaldehyde, tso cov tshuaj dithizone, hnov mob ntawm 24℃kev sib cais thiab 2 teev tom qab ziab. Lub peev xwm adsorption ntawm cov gel rau cov mercury ions (Hg ² +) yog 120mg / g, thiab nws muaj kev ua haujlwm siab adsorption nyob rau hauv pH ntau ntawm 2-8, uas yog tsim rau kev kho mob siab heev ntawm acid mine wastewater thiab electroplating khib nyiab.
Los ntawm kev hloov kho rau saum npoo ntawm Fe3O4 nanoparticles, sib nqus adsorbents tuaj yeem npaj tau. Piv txwv li, los ntawm covalently bonding dithizone rau saum npoo ntawm Fe ∝ O ₄ @ SiO ₂ core-cov qauv plhaub nrog silane coupling tus neeg sawv cev, cov adsorption selectivity coefficient (Ksel) ntawm cov khoom tau txais rau cov hlau lead ions (Pb ² ⁺) ncav cuag 85.5K ntau dua (cov khoom siv), uas yog ntau dua. tuaj yeem sib cais sai sai thiab rov zoo los ntawm qhov chaw sib nqus sab nraud, ua tiav qhov rov ua dua ntawm cov adsorbent.
Dithiazone imprinted polymer
Molecular imprinting thev naus laus zis (MIT) ua ke nrog lub peev xwm chelating ntawm dithizone tuaj yeem npaj cov khoom siv adsorbent nrog "nco nyhuv" ntawm cov hlau ions tshwj xeeb. Piv txwv li, siv dithizone tooj liab complex ua qauv, imprinted polymers tau npaj los ntawm dawb radical polymerization. Lub peev xwm adsorption ntawm tooj liab ions yog 3.2 npaug ntawm cov polymers uas tsis yog imprinted, thiab cov tooj liab ion rov qab mus txog 92.7% nyob rau hauv ib tug tov hlau tov ntawm 10mg / L (muaj Cu ² ⁺, Zn ² ⁺, Cd ² ⁺).
Kev tsim khoom lag luam: ib qho "sib cais thiab purification" rau siab -cov khoom siv purity
Qhov taw qhia Dithizonechelating zog ua rau nws yog ib qho tseem ceeb reagent rau hlau ion sib cais thiab purification nyob rau hauv industrial ntau lawm, tshwj xeeb tshaj yog dav siv nyob rau hauv lub teb ntawm precious hlau rov qab thiab semiconductor khoom npaj.
Hauv kev kho hluav taws xob pov tseg, nws tuaj yeem siv rau kev xaiv rho tawm ntawm cov hlau muaj txiaj ntsig xws li kub (Au ³ ⁺) thiab nyiaj (Ag ⁺). Piv txwv li, los ntawm kev kho cov kua qaub leaching tov ntawm crushed Circuit Court board rau pH 1-2 thiab ntxiv ib tug tov ntawm dithizone chloroform, kub ions raug muab rho tawm mus rau hauv lub organic theem, thaum lub hauv paus hlau xws li tooj liab thiab hlau tseem nyob rau hauv lub aqueous theem, ua tau zoo enrichment ntawm precious hlau. Cov nyiaj rov qab kub ntawm txoj kev no nce mus txog 98.5%, thiab cov dithizone tuaj yeem rov ua dua los ntawm kev rov qab rho tawm rov qab.
Purification ntawm cov khoom siv semiconductor
Hauv kev npaj ntawm silicon (Si) ib leeg muaju, nws tuaj yeem siv los tshem tawm impurities xws li tooj liab thiab hlau los ntawm cov khoom siv raw. Piv txwv li, sib tov silicon hmoov nrog ib tug daws ntawm dithizone toluene thiab nplawm ntawm 80℃rau 2 teev, tooj liab ions tsim ib tug complex nrog dithizone thiab muab rho tawm. Lub purity ntawm silicon hmoov yog nce los ntawm 99.9% mus rau 99.999%, ua tau raws li cov kev cai ntawm semiconductor qib.
Hauv cov txheej txheem xws li electroplating zinc thiab npib tsib xee, dithizone tuaj yeem siv los ua tus neeg saib xyuas kom tshem tawm cov teeb meem tsis zoo xws li txhuas thiab cadmium los ntawm cov tshuaj plating. Piv txwv li, ntxiv cov tshuaj dithizone ethanol rau cov tshuaj zinc plating uas muaj 0.5mg / L lead ua rau cov hlau lead ions los nag ua cov dithizone lead complexes. Tom qab pom, cov ntsiab lus txhuas hauv cov tshuaj plating txo qis qis dua 0.01mg / L, txhim kho qhov zoo ntawm txheej.
Covqhov taw qhia dithizonepeb muab yog ib yam khoom uas muaj purity ntawm 98%. Cov reagent tau ua tiav los ntawm peb tus kheej thev naus laus zis. Npaj raws li cov kauj ruam hauv qab no.
(1) Kev npaj Phenylhydrazine Dithioformate Phenylhydrazine ntsev. Dissolve 13g ntawm phenylhydrazine hauv 60ml ntawm ether thiab ntxiv 5.2ml ntawm carbon disulfide dropwise. Lim tawm cov dej dawb uas tsim tawm thiab ntxuav nws nrog ether kom tau txog 15g.
(2) Kev npaj ntawm Diphenylenediamine Thiourea. Muab cov khoom saum toj no tso rau hauv lub beaker thiab muab tso rau hauv ib da dej ntawm qhov kub ntawm 96-98 degrees. Tom qab cov khoom melts, tso hydrogen sulfide thiab tig mus rau hauv daj daj gel zoo li cov khoom. Yog tias cov roj ammonia raug tso tawm, tshem tawm los ntawm da dej kub thiab txias nrog dej. Tom qab ntawd siv cov dej khov txias. Tom qab ntawd txias nws nrog dej khov, ntxiv 15 ml ntawm anhydrous ethanol, tshem tawm ntawm lub da dej dej khov, do thiab cua sov me ntsis. Nyob rau lub sijhawm no, cov gel zoo li cov khoom siv los ua cov khoom siv crystalline, lim nws, ntxuav nws nrog ethanol, thiab tau txog 7.5g.
(3) Kev npaj ntawm dithizone. Ntxiv cov tau diphenylthiourea rau hauv cov tshuaj caustic potassium (6g poov tshuaj hydroxide yaj hauv 60ml anhydrous methanol), reflux nyob rau hauv boiling dej da dej rau 5 feeb, thiab tshem tawm thiab txias nyob rau hauv ib da dej dej khov. Lim thiab acidify lub filtrate nrog sulfuric acid kom txog rau thaum Congo liab daim ntawv xeem hloov xim thiab tsaus xiav precipitate yog precipitated. Lim thiab kho cov precipitate nrog caustic potassium tov thiab sulfuric acid. Tom qab pom, ntxuav nrog dej kom txog thaum tsis muaj sulfate ions. Qhuav ntawm 40℃yields txog 3g ntawm dithizone.
(4) Txias qhov sib xyaw ntawm phenylhydrazine thiab toluene kom qis dua 0 degree, ntxiv carbon disulfide nrog nplawm, thiab tswj qhov sib ntxiv kom tswj tau qhov ntsuas kub ntawm 60-70 degree. Tso nws rau ntau tshaj 10 feeb, tom qab ntawd kub nws mus txog 90-95 degree, yaj cov muaju, thiab pib cov tshuaj tiv thaiv.
(5) Thaum muaj ntau cov crystals precipitate thiab cov hmoov lead acetate reagent hloov me ntsis xim av, cov tshuaj tiv thaiv tiav. Tom qab txias, nws yog lim thiab cov muaju yog ntxuav nrog txias toluene thiab ethanol. Qhov tshwm sim dawb siv lead ua yog diphenylthiocarbazide.
(6) Tom qab ntawd, ntxiv diphenylcarbazide rau methanol tov ntawm poov tshuaj hydroxide, tshav kub thiab reflux rau 5-10 feeb, txias nrog dej khov rau ib ncig ntawm 30 degree, lim tawm insoluble tshuaj.
(7) Ntxiv 0.5mol / L sulfuric acid aqueous tov rau lub filtrate thaum stirring kom txog thaum cov tshuaj yog acidic rau Congo liab daim ntawv xeem. Ntxuav cov muaju nrog dej txias ua ntej, tom qab ntawd yaj lawv hauv 5% sodium hydroxide tov, lim tawm cov khoom tsis zoo, thiab txias cov lim dej nrog dej khov.
(8) Tib lub sijhawm, acidify Congo liab daim ntawv xeem nrog txias 0.5mol / L sulfuric acid kom txog thaum nws dhau los ua kua qaub. Tom qab ua tiav nag lossis daus, lim nws. Ntxuav cov lim dej kom huv si nrog dej khov kom txog thaum SO4 2- ion tsim nyog. Tom qab tso dej, qhuav ntawm 40℃kom tau cov khoom tiav diphenylthiocarbazone.
ua faq
Yuav ua li cas npaj dithizone ntsuas?
Npaj cov tshuaj dithizone los ntawmDissolving 0.05 g dithizone hauv 100 mL ntawm 95% ethanol hauv 250-mL beaker. Cov khoom yuav tsis yaj tag, tab sis thaum nplawm, cov tshuaj xiav / ntsuab tau txais. Cov tshuaj no yuav tsum tau ua tshiab.
Dab tsi yog kev siv dithizone hauv kev tshuaj ntsuam chemistry?
Dithizone txhais tau tias yog cov tshuaj lom neeg siv hauvfluorescence sensing daim ntawv thov, tshwj xeeb tshaj yog rau kev kuaj xyuas cov khoom seem hauv cov qauv xws li zaub thiab dej, qhov twg nws tsim cov complexes uas tuaj yeem suav tau los ntawm txoj kev fluorescence quenching.
Dab tsi yog qhov ntsuas dithizone rau txhuas?
Txoj kev dithizonekev ntsuas coj hauv dej thiab dej khib nyiab. DithiVer Metals Reagent yog cov hmoov ruaj khov ntawm dithizone. Lead ions nyob rau hauv cov tshuaj yooj yim teb nrog 6 Lead, Dithizone Method (300 µg/L) Nplooj 7 dithizone los tsim cov liab liab rau liab lead-dithizonate complex, uas yog muab rho tawm nrog chloroform.
Txoj kev dithizone rau cadmium tsom xam yog dab tsi?
Colorimetric txiav txim siab nrog dithizone (diphenylthiocarbazone) yogIb txoj hauv kev yooj yim uas tau siv los txheeb xyuas cadmium (Cd) ions hauv dej. Txawm li cas los xij, kev txiav txim siab nyob ze rau tus nqi ib puag ncig (3 ugL-1) siv txoj kev no nyuaj vim nws qhov rhiab heev.
Dab tsi yog dithizone tseem hu ua?
Dithizone, tseem hu uaDiphenylthiocarbazone, yog siv los ntsuas qhov purity ntawm pancreatic islet npaj rau kev hloov mus rau tib neeg uas muaj ntshav qab zib hom 1. Nws yog ligand uas tsim cov complexes nrog ntau cov hlau xws li mercury thiab lead.
Dab tsi yog qhov kev xeem zoo tshaj plaws rau cadmium?
Qhov kev tshuaj ntsuam xyuas zoo tshaj plaws thiab kev kuaj mob rau kev kis mob cadmium yog a24-teev urinary cadmium theem, normalized rau creatinine excretion. Urinary metallothionein thiab2-microglobulin excretion tuaj yeem cuam tshuam nrog ntev - lub sij hawm raug cadmium.
Cim npe nrov: Dithizone Indicator CAS 60-10-6, lwm tus neeg, manufacturers, hoobkas, lag luam wholesale, yuav, nqe, tej, kev muag khoom