Visit to the General Chemical State Laboratory
17
Visit to the General Visit to the General Chemical State Chemical State Laboratory Laboratory
-
Upload
geoffrey-mcclain -
Category
Documents
-
view
23 -
download
3
description
Visit to the General Chemical State Laboratory. GREEK CHEMISTRY CENTRE. Measuring the pH of water…with my classmates. WE FOUND PARAMETRES OF WATER. Limits of law. CONCLUSION - PowerPoint PPT Presentation
Transcript of Visit to the General Chemical State Laboratory
Visit to the General Visit to the General Chemical State Chemical State
Laboratory Laboratory
GREEK CHEMISTRY CENTRE
Measuring the pH of water…with Measuring the pH of water…with my classmatesmy classmates
Estimated parameter
Analytical method
Tap Water in the school
Tap Water school yard
BottleHome Water
SapesHome Water
komotiniLimits of law
pHDetermination of pH in water
7,55 7,55 7,85 7,65 7,45 6,5<pH<9,5
conductivityConductivity in water
641 μS/cm 640 μS/cm 275 μS/cm 643 μS/cm 600 μS/cm <2500 μS/cm
Ammonium Photometry 0,02 mg/L 0,02 mg/L 0,01 mg/L 0,02 mg/L 0,02 mg/L <0,50 mg/L
SulphateIonic chromatography
96,5 mg/L 98,9 mg/L 4,4 mg/L 99,1 mg/L 42,7 mg/L <250 mg/L
NitrateIonic chromatography
3,98 mg/L 4,4 mg/L 1 mg/L 4,0 mg/L 36,0 mg/L <50 mg/L
Nitrite photometry <0,01 mg/L <0,01 mg/L <0,01 mg/L <0,01 mg/L <0,01 mg/L <0,50 mg/L
Total Hardness
Titration22 French degrees
22 French degrees
22 French degrees
22 French degrees
23 French degrees
FluorideIonic chromatography
0,25 mg/L 0,20 mg/L 0,1 mg/L 0,5 mg/L 0,2 mg/L <1,50 mg/L
ChlorideIonic chromatography
47,47 mg/L 48,33 mg/L 8,42 mg/L 50,58 mg/L 35,07 mg/L <250 mg/L
WE FOUNDPARAMETRES OF WATER
0
500
1000
1500
2000
2500
con
du
ctiv
ity
mS
/cm
1 2 3 4 5 6water samples
conductivity
Limits of law
0
0,1
0,2
0,3
0,4
0,5
amm
on
ium
mg
/L
1 2 3 4 5 6
Water samples
Ammonium
0
50
100
150
200
250
sulp
hat
e m
g/L
1 2 3 4 5 6
water samples
Sulphate
0
10
20
30
40
50
Nit
rate
mg
/L
1 2 3 4 5 6
Water samples
Nitrate
Σειρά1
0
0,1
0,2
0,3
0,4
0,5
nit
rite
mg
/L1 2 3 4 5 6
Water samples
Nitrite
00,20,40,60,8
11,21,41,6
Fluoride mg/L
1 2 3 4 5 6
Water samples
Fluoride
0
50
100
150
200
250
chlo
rid
e m
g/L
1 2 3 4 5 6
Water samples
Chloride
CONCLUSIONOur tap water and all bottled mineral water sold
in Greece, is regulated by Greek chemistry Centre for Foods and Water. Tap and mineral water is sourced from surface water or ground water. They are clean, pure and good for our
health.
