Head of lab: Mr. Le Anh Kha

Contact: lakha@ctu.edu.vn

Phone number: 0918 440 838

Function: serve for practicing, researching and analyzing the parameter on the quality of soil environment, water environment, air environment and microorganism in environment. The lab can analyze the parameter on environmental quality.

The parameter which the lab can test

No

Parameter

Method

Main instrument

Water sample

 

 

1

Dissolved oxygen  (DO)

- Winkler 

- electrode

- dissolved oxygen meter

2

Biochemical oxygen demand   (BOD)

-measure BOD with specialized equipment

- oven 200C

- OxiTop BOD specialized meter of WTW

3

Chemical oxygen demand (COD)

- Permanganate kali

- K2Cr2O7 (Closed reflux)

- steamer

- burning stove COD

4

Total sulfua, H2S

- Iodine

 

5

NH4+

- Indophenol blue

- Ion chromatography

- Kjeldahl

-U2800-Hitachi colorimeter

-Cation chromatography machine

-Kjeldahl protein distillation system

6

Total protein

- Kjeldahl

- inorganic stove

- Kjeldahl protein distillation system

7

NO2-

- colorimetry (Standard methods of APHA)

- Ion chromatography

- U2800-Hitachi colorimeter

- anion chromatography machine

8

NO3-

- salicylate colorimetry

- Ion chromatography

- U2800-Hitachi colorimeter

- anion chromatography machine

9

PO43-

- Acid ascorbic

U2800-Hitachi colorimeter

10

Total phosphorus

- inorganic

- Acid ascorbic

- Autoclave 

- U2800-Hitachi colorimeter

11

Fe3+ và Fe

- colorimetry thiocianate

- U2800-Hitachi colorimeter

12

Al3+

- Eriochrome Cyanine R

- U2800-Hitachi colorimeter

13

SO42-

- Ion chromatography

-  anion chromatography machine

14

Cl­-

- Ion chromatography

- anion chromatography machine

15

Na+

- Ion chromatography

- cation chromatography machine

16

Ca2+

- Ion chromatography

- cation chromatography machine

17

Mg+

- Ion chromatography

- cation chromatography machine

18

K+

- Ion chromatography

- cation chromatography machine

19

pH

- electrode

- pH meter

20

EC

- electrode

- conductivity meter

21

Salinity

- Refractometer

- electrode

- refractometer

- conductivity meter

22

Total acidity

-Titration strong base

 - Burette

23

Alkalinity  phenophthlein and   total alkalinity

- titration strong acid

 - Burette

24

Total hardness

- titration EDTA

 - Burette

25

Turbidity

-Measure diffuse turbidty

- diffuse turbidty meter

26

Transparency

- secchi disk

 

27

Solids: total solids (TS), suspended solids (SS), total dissolved solids (TDS), volatile solids (VS) and settable solids

- weight

- oven, heating cabinets, analytical balance

28

E.coli

- CFU

- oven memmer

29

Coliform

- CFU

- oven memmer

Plant sample

 

 

1

pHH2O, pHKCl

- extract distilled water or   KCl, rate 1:5 (soil/extraction solution).

- pH meter , shaker

2

EC

- extract distilled water, rate 1:5 (soil/water).

- EC meter , shaker

3

Organic carbon

- Walkley-Black method

- Burette, triangle bottle 250 ml

4

Total N in soil and tree

- Kjeldahl.

- Kjeldahl protein distillation system

5

Total P in soil and tree

- Inorganic by H2SO4đđ-HClO4, color of phosphomolybdate with acid ascorbic.

- U2800-Hitachi colorimeter

6

Effervescent P in soil

-Oniani method: extract soil with H2SO4 0.1N, rate of soil/extraction solution is 1:5

- U2800-Hitachi colorimeter

7

Total acid

- extract KCl 1N, titration with NaOH 0.01N.

- Burette

8

Exchange Al3+

- extract KCl 1N, titration with NaOH 0.01N, compound with NaF, titration H2SO4, concentration 0.01N.

- Burette

9

CEC

- extract BaCl2 0.1M, titration EDTA 0.01M.

- Burette 100 ml

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