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 thepa ea bohlokoa ea lik'hemik'hale tse sa pheleng, e sebelisoang haholo masimong a kang metallurgy, electroplating, meriana le tlhahiso ea lintho tse phelang. Sehlahisoa sa eona se hloekileng se ka sebopeho sa likaroloana tse tšoeu tsa kristale kapa phofo, e qhibilihang haholo metsing 'me e na le chefo e matla le ho bola. Ka lebaka la chefo e phahameng haholo ea Sodium Cyanide , mahlale a eona a Taolo ea Boleng le ho lemoha a amana ka ho toba 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)

Maemo a Boleng a hajoale bakeng sa sodium cyanide Chaena a thehiloe haholo-holo ho "GB/T 19306-2003 Industrial Sodium Cyanide". Maemo ana a totobatsa litlhoko tsa tekheniki, mekhoa ea liteko, melao ea tlhahlobo, le litlhaloso tsa ho paka, polokelo le lipalangoang bakeng sa sodium cyanide ea maemo a indasteri . Matšoao a ikhethileng ke a 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 e nang le asiti: Pele o lemoha, fetola pH ea tharollo ho ea 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 Fumana ka Boiketsetso: Kopanya spectroscopy ea inthanete e haufi le infrared (NIR) le ho ithuta ka mochini ho fihlella tlhokomelo ea nako ea sebele ea ts'ebetso ea tlhahiso.

2. Mekhoa ea ho Lemoha Botala: Hlahisa mokhoa oa ho etsa hore letsoai le se ke la ba le mercury le fokotse tšilafalo ea tikoloho.

3. Theknoloji ea Tlhahlobo ea ho Latela: Ho sebelisoa ultra-performance high liquid chromatography-mass spectrometry (UHPLC-MS) bakeng sa ho lemoha litšila tsa ppb-level.

fihlela qeto e

Taolo ea boleng ba sodium cyanide ke sehokelo sa mantlha ho netefatsa ts'ebeliso ea eona e sireletsehileng. Ka Mekhoa e tloaelehileng ea ho Fumana 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 boqapi ba mahlale a ho lemoha, litekanyetso tsa boleng ba sodium cyanide li tla ntlafatsoa haholoanyane, li fane ka tšehetso e tšepahalang bakeng sa tšimo ea tlhahiso ea maemo a holimo.