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 |