Uvavanyo lwe-Toxicity ye-Sodium Cyanide kunye neMilinganiselo yoThintelo lweeNgcipheko ezifanelekileyo

I-Sodium cyanide (NaCN), njengesithako sekhemikhali esiyingozi kakhulu, idlala indima engenakutshintshwa kwicandelo lemizi-mveliso, njengokwembiwa kwegolide, ukufakelwa kwe-electroplating, kunye nokuhlanganiswa kwamayeza. Nangona kunjalo, iingozi zayo ezinokubakho ziyingozi enkulu kwimpilo yabantu nakwindalo esingqongileyo. Eli nqaku liza kuhlalutya ngokucwangcisiweyo indlela yokusetyenziswa kobutyhefu, iimpawu zobungozi, kunye namanyathelo okuthintela i- Sodium Cyanide , linike isiseko sesayensi solawulo lokhuseleko.

I. Inkqubo yetyhefu kunye neengozi zempilo

1. Ubuthi obubukhali

Ubuthi be -sodium cyanide buvela ikakhulu kwi-cyanide ion (CN⁻) ehlukanisiweyo nayo. I-CN⁻ inokubangela ubuthi ngeendlela ezilandelayo:

• Ukuthintela ukuphefumla kweeseli : Ibopha kwi-cytochrome oxidase kwi-mitochondria, ithintele uthotho lokuthuthwa kwee-electron kwaye ithintele izicubu ekusebenziseni ioksijini ("i-intracellular asphyxia").

• Isenzo Esikhawulezayo : Idosi ebulalayo yomlomo imalunga ne-1-2 mg/kg (ibalwa njenge-CN⁻), kwaye ukuphefumla okanye ukudibana nolusu ngesisombululo esixineneyo kakhulu nako kunokuba yingozi.

• Iimpawu eziqhelekileyo :

• Ubuthi obuncinci: Intloko, isicaphucaphu, i-dyspnea, ukudideka;

• Ityhefu Enzima: Ukuxhuzula, isiqaqa, ukubanjwa kwentliziyo, kunye nokufa ngokuqhelekileyo kwenzeka kwimizuzu embalwa.

2. Ubutyhefu obungapheliyo

Ukuvezwa kwexesha elide kwiidosi eziphantsi kunokukhokelela koku:

• Umonakalo we-Neurological : Ukulahlekelwa yinkumbulo, i-peripheral neuritis;

• Ukungasebenzi kakuhle kwe-thyroid : I-CN⁻ iphazamisana nokuguqulwa kwe-iodine, nto leyo ekhokelela kwi-goiter okanye i-hypothyroidism;

• Ubuthi Bokuzala : Uvavanyo lwezilwanyana lubonisa ukuba lunokuchaphazela uphuhliso lwenkqubo yokuzala.

II. Iingozi zeNdalo kunye nemingcipheko yezendalo

1. Ubutyhefu kwizinto eziphila emanzini

Isodium cyanide inochuku kakhulu kwizinto eziphila emanzini. Umzekelo:

Intlanzi : Uxinaniso oluphakathi lwe-lethal (LC₅₀) luphantsi njenge-0.05-0.5 mg/L (kubalwa njenge-CN⁻);

I-Plankton : 0.01 mg/L inokuthintela i-photosynthesis.

Ngokwembali, ingozi yokuvuza kumgodi wegolide iBaia Mare eRomania ngowe-1995 yabulala inani elikhulu leentlanzi kuMlambo iDanube, yaye kwathatha iminyaka eliqela ukubuyisela indalo.

2. Ungcoliseko loMhlaba naManzi oMhlaba

• Ukuhambahamba : Izinzile kumhlaba we-alkaline, kodwa kusenokwenzeka ukuba ivelise igesi ye-HCN enobuthi kakhulu phantsi kweemeko ze-asidi;

• Ukubola kwezinto eziphilayo : Ezinye iintsholongwane zinokuguqula i-CN⁻ ibe yi-formamide (NH₂CHO) nge-cyanide hydrolase, kodwa izinga lokubola linqunyelwe ziimeko zendalo.

III. Amanyathelo oThintelo lweeNgozi

1. Ulawulo lobuNjineli

• Inkqubo Evaliweyo : Sebenzisa izixhobo zemveliso ezivalekileyo ngokupheleleyo ukunciphisa umngcipheko wokuvezwa yi-cyanide;

• Uyilo lokungenisa umoya : Xhobisa ngenkqubo yokungenisa umoya esebenzayo ukuqinisekisa ukuba uxinzelelo lwe-cyanide kwindawo yokusebenza luphantsi kunomda wokuvezwa emsebenzini (njenge-5 mg/m³ echazwe yi-OSHA);

• Iteknoloji yokuZenzekelayo : Sebenzisa iirobhothi okanye ulawulo olukude ukunciphisa ukusebenza ngesandla.

2. Izixhobo zoKhuseleko zoMntu (PPE)

• Ukhuseleko lokuphefumla : Sebenzisa isixhobo sokuphefumla esinesixhobo sokuhluza igesi (njengesixhobo sokuhluza igesi sohlobo A), kwaye unxibe isixhobo sokuphefumla esizimeleyo (SCBA) xa kukho imeko engxamisekileyo;

• Ukhuseleko lolusu : Nxiba impahla yokukhusela iikhemikhali kunye neeglavu (impahla mayingangeni kwi-cyanide, njengerabha ye-nitrile);

• Ukukhusela Amehlo : Nxiba izibuko zokhuseleko zamakhemikhali okanye isikhuselo sobuso.

3. Amanyathelo oLawulo

• Uqeqesho kunye neSatifikethi : Qhuba uqeqesho rhoqo malunga nokusebenza ngokukhuselekileyo kwe-cyanide kubasebenzi, kwaye banokusebenza kuphela emva kokuphumelela uvavanyo;

• Inkqubo yeLayisensi : Lawula ngokungqongqo ukuthengwa, ukugcinwa, kunye nokuthuthwa kwe-cyanide, kwaye usebenzise ulawulo "lwabantu ababini kunye nabatshixileyo";

• Ukubeka iliso kunye nokuphendula ngexesha likaxakeka : Faka i-sensor ye-cyanide ekwi-intanethi, ujonge rhoqo uxinano emoyeni nasemanzini, kwaye wenze isicwangciso sokuphendula ngexesha likaxakeka lokuvuza.

4. Unyango olungxamisekileyo

• Ukulahlwa kokuvuza :

1.Kwangoko uhlukanise indawo engcolileyo kwaye unqumle umthombo wokutshisa (i-HCN iyatsha);

2.Ukunciphisa ubuninzi be-sodium hypochlorite okanye isisombululo se-sodium thiosulfate:

CN⁻ + ClO⁻ → CNO⁻ + Cl⁻ (iphinda i-oxidized ibe yi-CO₂ kunye ne-N₂);

3. Gcoba ulwelo oluseleyo (njengokusebenzisa iCarbon esebenzayo ) ukuthintela ukusasazeka kongcoliseko.

• Uncedo Lokuqala Lokutyhefa :

1.Khawuleza usuke kwindawo kwaye ugcine umgudu wokuphefumula ungaphazamiseki;

2.Kwangoko sebenzisa i-antidote (efana nokukhupha i-amyl nitrite + i-intravenous injection ye-sodium thiosulfate);

3.Yenza i-cardiopulmonary resuscitation (CPR) de kufike ukuhlangulwa kweengcali.

IV. Utshintsho lweTekhnoloji kunye neeNdlela zexesha elizayo

1. Ukutshintshwa kweeNkqubo zeCyanide-free

• Ukutsalwa kweGolide : Indlela yokutsalwa kweThiourea, indlela yokutsalwa kwezinto eziphilayo (kusetyenziswa iintsholongwane ukubola i-ore);

• Ishishini lokuGcina nge-Electroplating : Sebenzisa ii-electrolyte ezingena-cyanide ezifana ne-zincate kunye ne-citrate.

2. Inkqubo yokuJonga iDijithali

Beka iliso kugxininiso lwecyanide ngexesha lokwenyani nge-Intanethi yeZinto (IoT) kunye nobukrelekrele bokwenziwa (AI), kwaye uphucule ukuvuza kwesakhono sokulumkisa kwangaphambili ngokudibanisa nokuhlolwa kwedrone.

3. Ukuphuculwa kweMimiselo neMigangatho

• Imigaqo Yamazwe Ngamazwe : Ukuthobela iKhowudi yoLawulo lweCyanide yaMazwe Ngamazwe (ICMI) ukuze kuqiniswe ukuthotyelwa kokusingqongileyo;

• Imigangatho yaseTshayina : GB 31574-2015 "Imigangatho yokukhupha izinto ezingcolisayo kwiShishini leeKhemikhali ezingaphiliyo" ithintela ngokungqongqo ukukhutshwa kwe-cyanide.

V. Isiphelo

Iingozi zetyhefu zeSodium cyanide azinakuze zihoywe, kodwa ngolawulo lwesayensi, ubugcisa obutsha, kunye nolawulo olungqongqo, iingozi zayo zinokulawulwa ngempumelelo. Kwixesha elizayo, ngokusasazwa kweenkqubo eziluhlaza kunye nophuhliso lwetekhnoloji yokubeka esweni ngobulumko, ukusetyenziswa ngokukhuselekileyo kwe-cyanide kuya kufikelela kwinqanaba eliphezulu. Amashishini kufuneka anamathele kumgaqo "wokuthintela kuqala, umngcipheko ulawuleke", kwaye azalisekise ngempumelelo uxanduva lwawo lwentlalo ngelixa elandela izibonelelo zoqoqosho ukuqinisekisa impilo yoluntu kunye nokhuseleko lwendalo.