Ho hlahlojoa ha Maemo a Boleng le Mekhoa ea ho Fumana Sodium Cyanide

I. Thepa ea Motheo le Lisebelisoa tsa Sodium Cyanide

Sodium cyanide (NaCN) ke ntho ea bohlokoa ka ho fetisisa ea lik'hemik'hale tse tala, e sebelisoang haholo masimong a kang metallurgy, electroplating, pharmaceuticals, le organic synthesis. Sehlahisoa sa eona se hloekileng se na le likaroloana tse tšoeu tsa kristale kapa phofo, e qhibilihang haholo metsing 'me e na le chefo e matla le ho senya. Ka lebaka la chefo e phahameng haholo ea Sodium cyanide, eona Control Quality le mahlale a ho lemoha a amana ka kotloloho le polokeho ea tlhahiso, Tšireletso ea tikoloho, le bophelo bo botle ba batho.

II. The Quality Standard System ea Sodium Cyanide

1.Maemo a Naha (GB)

Ea hajoale Tekanyetso ea bolengs bakeng sa sodium cyanide Chaena li thehiloe haholo "GB/T 19306-2003 Industrial Sodium Cyanide". Tekanyetso ena e totobatsa litlhoko tsa tekheniki, mekhoa ea liteko, melao ea tlhahlobo, ho paka, ho boloka, le lintlha tsa lipalangoang bakeng sa boemo ba indasteri. Sodium cyanide. Lipontšo tse khethehileng ke tse latelang:

Litaba tse ka Sehloohong (Ho baloa e le NaCN): ≥ 98.0% (Kereiti e Ntle), ≥ 97.0% (Mophato oa Pele)

• Sodium Hydrooxide (NaOH): ≤ 0.5%

• Sodium carbonate (Na₂CO₃): ≤ 1.0%

• Litšepe tse boima (tse baloang joalo ka Pb): ≤ 0.002%

• Ntho e sa Keneng ka Metsing: ≤ 0.05%

2.Industry Standards le International Specifications

• Maemo a indasteri indastering ea metallurgy (joalo ka YS/T 53-2020) a hlahisa litlhoko tse phahameng tsa bohloeki le litšila tsa sodium cyanide, tse sebetsang maemong a khethehileng a kang ho ntšoa ha khauta.

• Litekanyetso tsa machaba (joalo ka ISO 14649) li totobatsa ho fumanoa ha bohloeki le tlhahlobo ea ho se hloeke ha sodium cyanide ho fihlela litlhoko tsa tlhahiso ea maemo a holimo.

III. Mekhoa e ka sehloohong ea ho lemoha sodium cyanide

1.Mekhoa ea Tlhahlobo ea Lik'hemik'hale

• Silver Nitrate Titration Method (Mokhoa oa Arbitration):

Sebelisa mokhoa o tsitsitseng oa Ag(CN)₂⁻ pakeng tsa Ag⁺ le CN⁻. Titrate ka tharollo e tloaelehileng ea nitrate ea silevera 'me u sebelise iodide ea potassium e le pontšo. Qetellong, pula ea iodide ea silevera e thehoa.

Mokhoa oa ho arabela: AgNO₃ + 2NaCN → Na[Ag(CN)₂] + NaNO₃

• Acid-Base Titration Mokhoa:

E sebelisetsoa ho fumana hore na sodium hydroxide e na le bokae. Sebelisa phenolphthalein e le pontšo le titrate ka tharollo e tloaelehileng ea hydrochloric acid.

2.Mekhoa ea Tlhahlobo ea Lisebelisoa

• Ion Chromatography (IC):

Arola CN⁻ ka kholomo ea phapanyetsano ea anion 'me u fihlelle tšibollo e hlokolosi haholo ha e kopane le sesebelisoa sa conductivity, se loketseng tlhahlobo ea trace cyanides.

• Spectrophotometry:

Ho ipapisitsoe le karabelo lipakeng tsa cyanide le moemeli oa chromogenic (joalo ka isonicotinic acid-pyrazolone) ho theha motsoako o moputsoa, ​​​​le ho tseba litaba ka ho lekanya ho monya.

• Atomic Absorption Spectrometry (AAS):

Fumana litšila tse boima (joalo ka Pb, Cu) 'me u fihlele boemo bo nepahetseng ba ppm u sebelisa lelakabe kapa theknoloji ea graphite sebōpi sa atomization.

3.Lintho tse ling tsa ho lemoha

• Boikemisetso ba Mongobo: Sebelisa mokhoa oa Karl Fischer kapa tahlehelo ea mokhoa oa ho omisa.

• Tlhahlobo ea Boholo ba Particle: Sebelisa mokhoa oa laser diffraction kapa mokhoa oa sieving.

IV. Mokhoa oa ho Khetholla le Lintlha tsa Bohlokoa tsa Taolo ea Boleng

1.Sample Ho tšoara

• Sodium cyanide e na le hygroscopic haholo. Ha u etsa sampole, sebelisa setshelo se ommeng 'me u se boloke ka mokhoa o tiisitsoeng ho qoba bofokoli bo amang liphetho tsa ho lemoha.

• Bakeng sa lisampole tse chefo haholo, ts'ebetso e lokela ho etsoa ka hood ea mosi, 'me u roale lisebelisoa tsa ts'ireletso (joalo ka mask a khase le liatlana).

2.Mabaka a Tšitiso le Litharollo

• Tšitiso ea sulfide: Kenya hydrogen peroxide ho felisa tšusumetso ea S²⁻.

• Tikoloho ea Asiti: Pele o lemoha, fetola pH ea tharollo boemong ba alkaline (pH> 11) ho thibela ho fetoha ha HCN.

3.Mehato ea ho Laola Boleng

• Lekanya lisebelisoa (joaloka ion chromatographs le balances) khafetsa.

• Sebelisa lisebelisoa tse netefalitsoeng (CRM) bakeng sa netefatso ea ho hlaphoheloa (e hlokehang ho ba 95% -105%).

• Etsa boikemisetso bo tšoanang ba batho ba babeli, 'me ho kheloha ha sephetho ho lokela ho ba ≤ 0.3%.

V. Tšireletso ea Tšireletso le Litlhoko tsa Tšireletso ea Tikoloho

1. Litlhaloso tsa Ts'ebetso

• Tharollo ea sodium cyanide e lokela ho bolokoa sebakeng se lefifi ho qoba ho bola ha khase ea HCN ka lebaka la khanya.

• Bakeng sa ho phekola mokelikeli o litšila, eketsa tekanyo e feteletseng ea sodium hypochlorite kapa hydrogen peroxide ho oxidize le ho senya cyanide sebakeng se sireletsehileng (CN⁻ ≤ 0.5 mg/L).

2.Ho lumellana le Melao

• Ho ea ka "Melao ea Tsamaiso ea Tšireletseho ea Lik'hemik'hale Tse Kotsi" Chaena, tsamaiso ea "Five Doubles" ea tsamaiso (risiti ea batho ba babeli le ho romela, tlhokomelo ea batho ba babeli, joalo-joalo) e lokela ho kenngoa ts'ebetsong bakeng sa sodium cyanide.

• Laeborari ea ho lemoha e hloka ho fetisa setifikeiti sa CMA ho netefatsa ts'ebetso ea molao ea data.

VI. Mekhoa ea Tsoelo-pele ea Bokamoso

1. Theknoloji ea ho Itloaetsa: Kopanya marang-rang a haufi le infrared spectroscopy (NIR) le thuto ea mochine ho finyella tlhahlobo ea nako ea sebele ea ts'ebetso ea tlhahiso.

2. Mekhoa ea ho Lemoha Botala: Theha mokhoa oa ho tlosa letsoai ntle le mercury ho fokotsa tšilafalo ea tikoloho.

3. Theknoloji ea Tlhahlobo ea Trace: Ultra-high performance liquid chromatography-mass spectrometry (UHPLC-MS) e sebelisoa bakeng sa ho lemoha litšila tsa boemo ba ppb.

fihlela qeto e

Taolo ea boleng ba sodium cyanide ke sehokelo sa mantlha ho netefatsa ts'ebeliso ea eona e bolokehileng. Ka standardized Mokhoa oa ho Khethollas le litsamaiso tse thata tsa taolo ea boleng, likotsi tsa tlhahiso li ka fokotsoa ka katleho, 'me indasteri e ka khothaletsoa ho nts'etsapele ka tsela e tala le e bohlale. Nakong e tlang, ka ho nchafatsoa ha mahlale a ho lemoha, litekanyetso tsa boleng ba sodium cyanide li tla ntlafatsoa le ho feta, ho fana ka tšehetso e tšepahalang bakeng sa tšimo ea tlhahiso e phahameng.