National Standard yekutsunga kweiyo organic sulphides mu dehydrate gariki mu china

Chiyero ichi chakaenzana neyenyika yesangano rezvekumisidzana

1 pfupiso yeiyo nzira

Muenzaniso wakanyudzwa mumvura, ethanol unowedzerwa, kusiririsa orgowfur makomputa, uye zvakadzikira mu nitric acid yekuyera nzira, uye zvirimo zvegashation orgopusulfum

2 Reagents

2.1 nitric acid (chaiyo gravity 1.42)
2.2 ethanol 95% (v / v)
2.3 Fluy Paraffin
2.4 Nitric acid 10% (v / v)
2.5 ammonium hydroxide 10% (v / v)
2.6 0.1000mol / l sirivha nitrate standard solution, kugadzirira uye calibration nzira zvichienderana neGB 601-1977 "Chemical Reagent Standard Solution Kugadzirira Maitiro" Operation.
2.7 0.1000mol / l Ammonium thiocyanate standard solution, inorema ammonium thiocyanate 8g yakanyungudutswa mumvura 1l. Calibration Reference GB 601-1977 "Chemical Regent Standard Solution Kugadzirira nzira" mune sodium thiricyanate nzira.
2.8 Fernric Ammonium Sulfate Indicator Solution, Sundurated Solution.

3 chishandiso

Munguva yekuongorora, kunyanya sarudzo yekudzikisira inofanira kudzivirirwa kusangana nemhangura kana zvigadzirwa zveRabha, zvishandiso zvishandiso pasi pegirazi.
3.1 Iyo distillation apparatus (ona dhiagram) ndeye 250ml akareba sepeji flask.
3.2 250 mL Ground-necreck conical flasks, inokwanisa kushandiswa zvine chekuita neReflux Condenser.
3.3 Kugara tichipembera mvura yekugezera, inokwanisa kudzora tembiricha kusvika 37 ± 1 ° C.
3.4 G2 kana G3 girazi funnel.
3.5 vacuum pombi kana pombi yemvura.
3.6 PH Precision Test pepa, inokwanisa kuratidza paPH = 7 × 0.1. Allylated Sulfur distillation unit.

4 Zviongorori maitiro

4.1 SAMPLE Kudya
Dehydrate gariki marara akaitwa mune yunifomu zvimedu uye akabva atsvina, akashatiswa gariki granules uye garlic poda akaenzaniswa zvakananga.
4.2 sampuli size
Kuyera anenge 10G sampuli, chaiyo kusvika 0.01g.
4.3 kutsunga
4.3.1 Kubata
Isa iyo simple yemuenzaniso mune flask (3.1) ine 100ml ye40 ° C Mvura, Simudza Flask Girl Stopp Stopper, uye ichipfuura nekudziya kwemvura (3.3) pakupisa kwe37 × 1 ° C ye 2h .
4.3.2 distillation
Mushure mekuwedzera 20ml ye ethanol (2.2) uye 2ml yemifananidzo paraffin (2.3) kune iyo Flask (3.1), nekukurumidza, nekukurumidza nhamba), uye wedzera 10ML yeAmmonium hydroxide (2,5) kune iyo conical flask ( 3.2) Kuti ubudirwe hwakaderera hweChidimbu hwakanyudzwa muAmonium Hydroxide Solution.
Pisa iyo Flask (3.1) Kuti urege kupera simba mushure mekuwana makumi matanhatu emamir
Iko tembiricha inofanirwa kudzorwa panguva yekuregedza kuti udzivise kupaza kwegasi mabhuru uye kubvumira chiyero chakakodzera chekukanganisa kuti uwaniswe.
4.3.3 Titation
Neutraize iyo distillate (a) mune iyo conical flask ine nitric acid (2.4) uye simbisa iyo pH at 7 × 0. Zvakanyatsowedzera 20.00 ml yeiyo solution solution yeSilver nitrate (2.6) kune distillate (a) uye kupisa mubhavhu yekugeza kuFLLLX yeAflux kweAzland Distillate (a) inodonhedza kumhepo tembiricha uye yakasviba nekupomba negirazi funnel, (3.4) pombi yemvura (3.5) uye iyo iyo yakashongedzwa yakashambidzwa nemvura inopisa 4 times uye iyo filtrate uye kugeza (b ) vakaunganidzwa. Wedzera 5 ML ye nitric acid (2.1) uye mashoma madonhwe eTobrate Apmonium Solidator Solidator Solidator brown-tsvuku uye chengetedza iyo ye 0.5 min.

5 Kuverenga kwekuongorora mhinduro

5.1 Converlation nzira
Zvemukati wekusimbisa organosulpur makomputa mune yakadzvanywa gariki inoratidzwa seyekupedzisira chikamu cheAllylated Sulfa inopiwa neForpu: mccx100057.0) 20 (21 ×××× - =
Iko: X - muzana yezvinyorwa zvealatile orgowfu makomputa mune yakadzvanywa gariki,%;
C1 - Kubata Sirivheri Nitrate Standard Solution (2.6), mol / l;
C2 - Kuvimbika kweApmonium Thiocyanate Standard Solution (2.7), mol / l;
V - Vhoriyamu yeAbmonium Thiocyanate Sold Solice Discover, ML;
0.057 - magiramu ekupiswa propylated sulfur [(ch2ch = ch2) 2s] yakaenzana ne1,00 ml solution yekugadzirisa sirivheri nitrate ine c = 1.000 mol / l;
M - Misa yeiyo fungidziro g. Mhedzisiro yacho yakawanikwa ichataurwa kunzvimbo mbiri dzecustomer.
5.2 chaiyo yeiyo nzira
Kune mumwe mushanduri mumwe, mutsauko pakati pemhedzisiro mbiri dzakateedzana haifanirwe kupfuura mashanu muzana ezvakakosha kukosha, zvodzokorora kutsunga.
5.3 Ekudzo Chirevo
Tora iyo arithmetic zvinoreva sarudzo mbiri semhedzisiro.

Annotation:

Chiyero ichi chinokurudzirwa neiyo bureau yezvikafu zvisina kujairika zvehushumiro yeCommerce yeVanhu Republic of China.
Ichi chiyero chinobata nekunyora neBeijing chikafu chokudya munharaunda.
Iyo huru yekunyora yeiyi standard shing, liu zhenfang, li weidong, kudzokera ku jiuzhen.
Ministry of Commerce of People's Republic of China 1988-02-29 Yakabvumidzwa 1988-07-01 Kuita.