ke ʻano hoʻāʻo no ka ʻike o ka wai polymerized ferric sulfate

Nā ʻano hana ʻike i nā wai ʻO ka Sulfate Polyferric Ua hōʻuluʻulu ʻia nā ʻike, i māhele ʻia i ʻekolu mau māhele: ka ʻike ʻana i ka helu kuhikuhi koʻikoʻi (ka nui o ka hao a me ke kekelē kumu paʻakai) a me nā ʻano kōkua e pili ana i nā kūlana aupuni a me nā ʻenehana ʻoihana i hoʻohana pinepine ʻia:

I. Ka ʻike ʻana i ka nui o ka hao (helu kumu)

1. Ke ʻano hana titration Potassium dichromate (ʻano hoʻokolokolo maʻamau aupuni)

1. Kumumanaʻo: I loko o kahi ʻakika, hoʻohana ʻia ka tin chloride e hoʻemi i ka Fe³⁺ i Fe²⁺, a hoʻopau ʻia ka tin chloride keu e ka mercury chloride, a laila hoʻohui ʻia ka potassium dichromate a hiki i ka hopena poni.

2. kaʻanuʻu:

3.① E lawe i 1.5g laʻana + 20ml wai + 20ml waikawa hydrochloric (1:1) → e hoʻolapalapa no 1 minuke;

4.② E hoʻohui i kahi hopena o ka stannous chloride i ka nalo ʻana o ke kala melemele → hoʻomaʻalili koke;

5.③ E hoʻohui i ka 5ml saturated mercury chloride solution → e kū no 1 minuke;

6.④ E hoʻohui i 50ml wai + 10ml sulfur phosphorus i hui pū ʻia me ka waikawa + 4 ~ 5 kulu o ka sodium dianilatesulfonic acid → titrate me ka potassium dichromate a hiki i ka poni (30 kekona ʻaʻole mae).

7. Heluhelu: ka nui o ka hao (%) = (V × C × 05585 × 100) / m

8.(V: ka nui o ka titration, C: ka nui o ka potassium dichromate, m: ka nui o ka laʻana)

9. Nānā: He mea ʻawahia ka mercury chloride a pono e hoʻolei ʻia nā wai ʻōpala e like me nā lula.

2. ʻO ka spectroscopy omo atomika (AAS)

1. Kumumanaʻo: Ma hope o ka hoʻoheheʻe ʻia ʻana o ka hāpana, omo nā ʻātoma hao i ka mālamalama nalu maʻamau a ua helu ʻia e ka absorbance.

2. kaʻanuʻu:

3.① Hoʻoheheʻe ʻia ka hāpana i loko o ka waikawa dilute (e laʻa, ka waikawa hydrochloric) → kānana a hoʻoheheʻe;

4.② Ke ʻano piʻo maʻamau no ka hoʻoholo ʻana i ka absorbance.

5. Nā Pōmaikaʻi: kiʻekiʻe ke kiko (± 1%), hiki ke ana i nā ʻano metala like ʻole i ka manawa like.

3. Ke ʻano titration Potassium permanganate (e hōʻemi ana i ka ʻike ʻana i nā mea)

1. Hoʻohana: ʻIke ʻana i ka ʻike Fe²⁺ (hoʻopilikia i ka pololei o ka hao holoʻokoʻa).

2. KaʻAnuʻu Hana: Laʻana + waikawa sulfuric/waikawa phosphoric → titrate me 0.01mol/L potassium permanganate a hiki i ka hopena ʻulaʻula.

II. Ka ʻike ʻana i ke kumu paʻakai (nā ʻōuli kōkua koʻikoʻi)

Kumumanaʻo: Hoʻokaʻawale ka waikawa hydrochloric i ka polymerization o ka hāpana, uhi ka potassium fluoride i ka ion hao, a hoʻokaʻawale ka sodium hydroxide i ka waikawa manuahi.

Nā ʻanuʻu kūlana aupuni (GB/T14591-2016):

1.E lawe i ka laʻana 1.2 ~ 1.3g + 25ml hydrochloric acid maʻamau solution → waiho ma ka mahana o ka lumi no 10 mau minuke;

2. E hoʻohui i 10ml potassium fluoride solution (mask Fe³⁺) → E hoʻohui i 5 kulu phenolphthalein;

3. E hoʻohui me ka sodium hydroxide i kahi kala ʻulaʻula palupalu (30 kekona me ka ʻole o ka mae ʻana).

4. Heluhelu: Kekelē kumu (%) = [(V0-V) × C × 017 × 100] / (m × ka nui o ka hao%)

5.(V0/V: ka nui o ka titration hakahaka/laʻana, C: ka nui o ka NaOH)

III. Nā ʻano kōkua wikiwiki

1. Ke ʻano hui ʻana o ka mānoanoa

3. Ke kūlana noi: ka loiloi wikiwiki ma kahi hana.

4. hana

5.① E ana i ka mahana mau (20±1℃) i ka hāpana i loko o ka densitometer;

6.② Ke ʻoi aku ka nui o ka nui ma mua o 1.45g/cm³ a ​​i ʻole like me 1.45g/cm³, ʻo ka nui o ka hao ma kahi o 11.5%; inā emi ia ma mua o 1.3g/cm³, ʻaʻole ia he kūpono.

7. Nā Palena: Pono e hoʻoponopono ʻia me ka titration.

2. ʻIke ʻana i ka pH

8. Kūlana: ʻO ka pH o ka 1% wai hoʻonā he 2 ~ 3 (Kūlana aupuni GB / T14591-2016).

IV. Nā Memo

1. Ka hoʻoponopono ʻana o ka mea hoʻoheheʻe: Pono e hoʻoponopono mua ʻia ka titrant (e like me ka potassium dichromate, sodium hydroxide).

2. Hoʻopau ʻana i ke komo ʻana:

9. Ke ʻoi aku ke kekelē kumu ma mua o 16%, maʻalahi ke hoʻokumu ʻia nā precipitates hao hydroxide, no laila pono e paʻa ka kaohi ʻakika;

10. ʻIke ʻia ka arsenic, ke kēpau a me nā metala kaumaha ʻē aʻe e ka spectrometry absorption atomic.

3. hana palekana:

11. Pono e hana ʻia ke kaʻina hana paila o ka waikawa hydrochloric i loko o kahi uhi fume;

12. He mea ʻawahia loa ka Mercury chloride, a ua ʻōlelo ʻia e hoʻohana i nā ʻano hana me ka ʻole o ka mercury (e like me ke ʻano titanium trichloride).

hāpai

● ʻO ke kūlana pololei: koho i ke ʻano potassium dichromate (hao holoʻokoʻa) a i ʻole ke ʻano AAS (e like me ke kūlana ISO);

● Kānana wikiwiki: hui pū ʻana o ke ʻano density a me ke ʻano pH;

● Ka mana hoʻomalu piha: ʻike like ʻana i ka paʻakai (8% ~ 16% ka mea kūpono) a me nā metala kaumaha.