nke
1. Nguzogide dị mma na adịghị ọcha na ikike nchekwa dị mma na acid na alkali.
2. Ngwọta ahụ nwere uru dị mfe iji rụọ ọrụ, ọtụtụ usoro usoro, ọ dịghị mkpa ịgbanwe pH ugboro ugboro.
3. Gbochie ọganihu akara ime.
4. Mgbe ọgwụgwọ akara, ọ nwere ike imeziwanye ike nke elu na gloss nke profaịlụ aluminom.
Ihe mgbakwunye mkpuchi oyi | Mmiri a tọhapụrụ |
5-5.5g/L | Nhazi |
Ni2 | F- | pH | Okpomọkụ | Oge | Oriri |
0.9-1.3g/L | 0.4-0.6g/L | 5.5-6.5 | 22-28 ℃ | 1μm/1.3 nkeji | 0.9-1.5kg/T |
1. Kpebisie ike na ntinye nke Ni,F na pH, mee ka ha n'ime oke nke usoro usoro
2. Na-ahazi pH site n'ịgbakwụnye dilute acetic acid (dilute hydrofluoric acid) ma ọ bụ itughari sodium hydroxide (tughari amonia), debe pH uru n'etiti 5.5 na 6.5.
3. N'ihi na mbenata mmetọ nke rinsing bath ngwọta, na-achịkwa mmiri àgwà na pH nke rinsing bath ike, na pH nwere ike ọ bụghị ihe na-erughị 4.5.
A na-eji polybag mechie ihe mgbakwunye oyi, ụgbụ 5kg ọ bụla yana polybags 4 na katọn, ụgbụ 20kg nke ọ bụla.Echebere na ìhè na ebe akọrọ.
Mkpebi nke ọdịnaya nickel ion (Ni2+).
1. Nyochaa nzọụkwụ.
Were nke ọma 10mL nke mmiri mmiri sink n'ime beaker triangular 250mL, tinye 50mL mmiri, 10mL (pH=10) nke chloramine buffer, obere ego nke 1% violet, ma maa jijiji nke ọma.Titrate na 0.01mol/L EDTA ọkọlọtọ ngwọta ruo mgbe ngwọta gbanwere site na odo na-acha odo odo dị ka njedebe njedebe, na dekọọ oriri olu V.
2. Mgbakọ: Nickel(g/L)=5.869 × V × C
V: olu EDTA ọkọlọtọ ngwọta riri na milliliters (mL)
C: mkpokọta molar nke EDTA ọkọlọtọ ngwọta (mol/L)
1. Nkwadebe nke F- ọkọlọtọ ngwọta
① Standard ngwọta na F-ịta nke 5g / L: N'ezie tụọ 11.0526g NaF (Analytical Reagent, akọrọ na oven na 120 Celsius C maka 2h, na-echekwa na desiccator na a arọ karama maka ojiji, ziri ezi na 0.0001g mgbe atụ) ka igbari N'ime obere mmiri a na-agbanye mmiri, nyefee ya na 1000mL volumetric flask, gbanye ya na akara ahụ, ma maa jijiji nke ọma.
② Ngwọta ọkọlọtọ na F- mkpokọta 0.1g / L: Pipette 10mL nke ọkọlọtọ ọkọlọtọ na F-ịta 5g / L na flask volumetric dị n'elu n'ime flask volumetric 500mL, tụgharịa na akara ahụ, wee chekwaa na karama polyethylene.
③ Kwadebe ọkọlọtọ ọkọlọtọ na F- mkpokọta 0.2-1 g/L dị ka akọwara n'elu.
2. Nkwadebe nke mkpokọta Ionic ike na-emezi ihe nchekwa ihe (TSAB)
Were ihe dị ka 500mL nke mmiri dị nro ma tinye ya n'ime iko iko dị ọcha nke 1L, tinye 57ml nke glacial acetic acid, wee tinye 58.5g nke sodium chloride na 12g nke sodium citrate iji dozie ma gbazee kpamkpam, wee jiri sodium hydroxide dị ọcha mee nyocha. gbanwee ka pH = 5.0 ~ 5.5, gbanye na 1L na mmiri distilled.
3. F- Ọkọlọtọ okirikiri eserese
① Pipette 2mL nke ọkọlọtọ ngwọta na ịta nke 0.1g / L n'ime a 100mL plastic beaker, wee tinye 20mL TISAB ihe ngwọta, tinye na a magnet, bilie na a magnetik stirrer, fanye oxygen electrode na akwụkwọ electrode karị, Mgbe electromagnetic edemede maka. 3min, guzo maka 30s, wee gụọ ikike nha anya Ex;
② Jiri otu usoro ahụ tụọ uru nwere ike Ex nke ọkọlọtọ ọkọlọtọ nke F na-etinye ya bụ 0.2~1g/L, wee dozie itinye uche site na obere ruo elu.N'akwụkwọ eserese ahụ, see usoro ọkọlọtọ EF nwere ikike E dị ka nhazi na ntinye F dị ka abscissa.
4. Usoro mkpebi
N'ezie pipette 20mL nke mmiri mmiri sink n'ime beaker 100mL, gbakwunye 20mL nke mkpokọta ike ionic (TISAB), kpalite na ihe ndọta maka 3min, wee tụọ mv pụrụ iche ozugbo site na iji electrode fluorine.Chọta ọdịnaya fluorine kwekọrọ m na ọdịnaya fluorine-nwere ike ịdị iche ọkọlọtọ electrode eserese.
Usoro usoro
OyiIhe mgbakwunye akara | nikelion | Fluoride | PH | okpomọkụ |
0.9-1.3g/L | 0.4 - 0.6g/L | 5.5-6.5 | 22 ~ 28 ℃ |