team work quantitative analysis and qualitative analysis by rodney pujada LATTC

1. Los Angeles Trade Technology College
Chemical Technology Program
Courses: Chemical Technology 131- 142
Project Team
Group: No2
Clarence McKelry
Dynicia Braxton
Rodney Pujada
Robert Thomas
Submission Date: Monday 10th, 2010
1

2. Contents
1. pH Analysis 3
2. Total Dissolved Solid Dried at 180 ⁰C 4
3. Total Suspended Solids Dried at 103-105 ⁰C 6
4. Chlorine Analysis 9
5. Determination of Sulfate 12
6. Oil & Grease Analysis 18
7. Hardness Analysis 21
8. Sewage Water Analysis 23
2

3. 1. Title : pH Analysis
1.1. Method#: 4500-H+ A. pH Value
1.2. Analytes:
Sample ID#: A-7543-b
Sample ID#: B - 1500
Sample ID#: B – 1214-0
Sample ID#: F – 882-3
Sample ID#: C – 222-4
1.3. Date Due: Wednesday, April 14th, 2010
1.4. Prepared by: Dynicia and Clarence
1.5. Objective: To determine pH liquid unknown sample.
1.6. Data Analysis:
Sample ID# pH Color
A-7543 -b 2.56 Colorless
B-1500 5.58 Colorless
B-1214-0 2.56 Colorless
F-882-3 6.99 Colorless
C-222-4 3.12 Colorless
duplicate
1.7. Conclusion
All of samples are acid and colorless
3

4. 2. Title: Total Dissolved Solid Dried at 180 ⁰C
2.1 Method#: 2540 C. Total Dissolved Solid Dried at 180 ⁰C
2.2 Analytes:
Sample ID#: A-7543-b
Sample ID#: B - 1500
Sample ID#: B – 1214-0
Sample ID#: F – 882-3
Sample ID#: C – 222-4
Sample ID#: A – 3614
2.3 Date Due: Wednesday, April 21th, 2010
2.4 Prepared by: Rodney and Clarence
2.5 Objective: Determine the concentration of total suspended solid in
each samples.
2.6The Sample Handling and Preservation
a) Preserve by refrigeration at 4 ⁰C
b) The maximum holding for samples is 28 days
2.7 Data Analysis
Table No 1: Experimental Data
4/19/2010 4/19/2010 4/19/2010 4/20/2010 4/21/2010
Dish with
Sample ID# Dish empty 7:30 AM 9:45 AM 9:00 AM 9:00 AM sample
grams reference(gr) W1(gr) W2 (gr) W3 (gr) Average(W1,W2,W3)
A-7543-b 58.9607 58.9649 58.9640 58.9637 58.9638 58.9638
B-1500 58.4378 58.4427 58.4405 58.4399 58.4393 58.4399
B-1214-0 73.3920 73.3945 73.3910 73.3911 73.3901 73.3907
F-882-3 72.5863 72.5627 72.5618 72.5620 72.5642 72.5627
C-222-4 66.4562 66.4721 66.4709 66.4682 66.4671 66.4687
4

5. A-3614 68.1818 66.1852 66.1835 66.1830 66.1830 66.1832
A-7543-b
Duplicate 68.1215 68.1221 68.1200 66.1198 68.1193 67.4530
Table No 2: Result of gravimetric measures
B A (A-B) mg/Lt
Dish with
Sample ID# Dish empty sample Gravimetric Difference to 25 mL
mg Average(W1,W2,W3) mg (B-A)/0.025
A-7543-b 58960.7 58963.8 3.1333 125.3
B-1500 58437.8 58439.9 2.1000 84.0
B-1214-0 73392.0 73390.7 -1.2667 -50.7
F-882-3 72586.3 72562.7 -23.6333 -945.3
C-222-4 66456.2 66468.7 12.5333 501.3
A-3614 68181.8 66183.2 -1998.6333 -79945.3
A-7543-b
Duplicate 68121.5 67453.0 -668.4667 -26738.7
2.8Calculations
a) Calculating total dissolved solids concentration:
mg Dissolved solids/L = ( A – B )x1000
mL sample
A = weight of dried residue + dish, mg
B = weight of dish, mg
For Sample ID#: A-7543-b
A = 58.9638
B = 58.9607
5

6. mg Dissolved solids/L = (58.9638 - 58.9607)x1000
25 mL sample
mg Dissolved solids/L = 125.3
2.9Conclusion
We made a mistakes in samples:
Sample ID#: B – 1214-0
Sample ID#: F – 882-3
Sample ID#: A – 3614
Duplicate Sample ID#: A-7543-b
3. Title : Total Suspended Solids Dried at 103-105 ⁰C
3.1 Method#: 2540 D. Total Suspended Solids Dried at 103 ⁰c
3.2 Analytes:
Sample ID#: A-7543-b
Sample ID#: B - 1500
Sample ID#: B – 1214-0
Sample ID#: F – 882-3
Sample ID#: C – 222-4
Sample ID#: A – 3614
3.3 Date Due: Wednesday, April 21th, 2010
3.4 Prepared by: Rodney and Clarence
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7. 3.5 Objective: To determine the concentration of total suspended solid in
the unknown samples.
3.6The Sample Handling and Preservation
a) Preserve by refrigeration at 4 C
b) The maximum holding for samples is 28 days
3.7Data Analysis
Table No 1: Experimental Data
Gooch with
4/15/2010 4/15/2010 4/15/2010 4/15/2010 sample
Gooch empty
Sample ID +filter 9:30 AM 10:00 AM 10:30 AM Average (g)
grams W1(g) W2(g) W3(g.) Average(W1,W2,W3)
A-7543-b 19.0563 19.0487 19.0471 19.0473 19.0477
F-882-3 18.5164 18.5158 18.5143 18.5143 18.5148
B-1500 17.6503 17.6391 17.6390 17.6370 17.6384
C-222-4 17.2329 17.2332 17.2332 17.2325 17.2330
A-7543-b
Duplicate 17.0224 17.3989 17.3989 17.3985 17.3988
A-3614 18.8490 18.8482 18.8479 18.8491 18.8484
B-1214-0 18.5200 18.5206 18.5206 18.5204 18.5205
Table No 2: Result of gravimetric measures
B A (A-B) mg/Lt
Dish with
Gravimetric
Sample ID Dish empty sample Difference to 25 mL
mg Average(W1,W2,W3) mg (B-A)/0.025
A-7543-b 19056.3 19047.7 -8.6 -344.0
F-882-3 18516.4 18514.8 -1.6 -64.0
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8. B-1500 17650.3 17638.4 -11.9 -477.3
C-222-4 17232.9 17233.0 0.1 2.7
A-7543-b
Duplicate 17022.4 17398.8 376.4 15054.7
A-3614 18849.0 18848.4 -0.6 -24.0
B-1214-0 18520.0 18520.5 0.5 21.3
3.8Calculation
a) Calculating total suspended solids concentration:
mg suspended solids/L = ( A – B )x1000
mL sample
A = weight of dried residue + gooch crucible, mg
B = weight of gooch crucible, mg
For Sample ID#: A-7543-b
A = 58.9638
B = 58.9607
mg Dissolved solids/L = (19047.7 -19056.3)x1000
25 mL sample
mg Dissolved solids/L = -344.0
3.9Conclusion
We made a mistake in sample
Sample ID#: A-7543-b and duplicate
Sample ID#: B - 1500
Sample ID#: F – 882-3
8

9. Sample ID#: A – 3614
4. Title: Chlorine Analysis
-
4.1 Method#: 4500-Cl C. Mercuric Nitrate Method
4.2 Analytes:
Sample ID#: A-7543-b
Sample ID#: B - 1500
Sample ID#: B – 1214-0
Sample ID#: C – 222-4
Sample ID#: A – 3614
4.3 Prepared by: Clarence and Robert
4.4 Date Due: Wednesday, April 21th, 2010
4.5 Objective: Chloride determination by titration with mercury
4.6 The Sample Handling and Preservation
a) Preserve by refrigeration at 4 ⁰C
b) The maximum holding for samples is 28 days
4.7 Data Analysis
Table No 1 : Volume of Mercuric Nitrate
Titrant
Sample ID Volume
(mL)
A-7543-b 0.70
B - 1500 3.30
B – 1214-0 4.30
C – 222-4 2.00
A – 3614 0.70
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10. C – 222-4
Duplicate 2.00
Table No2: Calculating chloride concentration in samples
Titrant (Mercuric Chloride
Titrant Titrated
Sample ID Nitrate) Concentration
Volume (mL) Volumen (mL)
Concentration(N) (g/L)
A-7543-b 0.70 0.0141 50 7.00
B - 1500 3.30 0.0141 50 32.99
B – 1214-0 4.30 0.0141 50 42.99
C – 222-4 2.00 0.0141 50 19.99
A – 3614 0.70 0.0141 50 7.00
C – 222-4
2.00 0.0141 50 19.99
Duplicate
4.8 Calculation
Prepared Hg(NO3)2 Concentration = 0.0141 N
mg/L Cl = (A – B) x N x 35.450
mL sample
Where:
A = mL of titrant (mercuric nitrate) for sample
B = mL of titrant (mercuric nitrate) for blank
N = normality of mercuric nitrate titrated concentration = 0.0141 N
For sample A- 7543-b
mg/L Cl = (0.70 – 0.01) x 0.0141 x 35.450
50 mL sample
mg/L Cl = 7.00 mg/Cl
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11. 5. Title: Determination of Sulfate
5.1 Method# : 4500-SO42- E. Turbidimetric Method
5.2 Analytes:
Sample ID#: F – 882-3
Sample ID#: A – 3614
Sample ID#: B – 1214-0
5.3 Prepared by: Rodney
5.4 Date Due: Tuesday, April 27th, 2010
5.5 Objective: To determine the sulfate concentration by comparison by
reading with a standard curve.
5.6 Summary of Method :
a) Sulfate ion is converted to a barium sulfate suspension under
controlled conditions.
b) The resulting turbidity is determined by spectrophotometer and
compared to a calibration curve prepared from standard sulfate
conditions.
5.7The Sample Handling and Preservation
a) Preserve by refrigeration at 4 ⁰C
b) The maximum holding for samples is 28 days
5.8 Data Analysis
Table No 1 Sulfate Calibration Curve
Concentration Absorbance
mg/L
0 0
11

12. 10 0.06
20 0.12
30 0.18
40 0.25
Table No 2 Sample Calibration Curve
Sample ID Absorbance
F-882-3 0.01
F-882-3
Duplicate 0.01
A-3614 0.56
B-1214-0 0.75
5.9 Graphic
a) Standard Calibration Curve
12

13. b) Sample Calibration Curve
13

14. 14

15. 5.10Calculation
a) Calculating volumes (mL) for standard concentration:
Prepared Na2SO4 149.7 mg/1L
Prepared dilution of 10, 20, 30, 40 mg/L
C1*V1 = C2*V2
Where:
C1 = sulfate concentration = 149.7 mg/L
V1 = unknown volume in mL
C2 = sulfate dilution concentration = 10 mg/1L
V2 = volume of dilution concentration (10 mg/L) = 100 mL
V1 = (C2*V2) / C1
V1 = 6.68 mL
volume for
Concentration dilution
mg/L mL
10 6.68
20 13.36
30 20.04
40 26.7
b) Calculating sample concentration by Calibration Curve
Sample ID Concentration Absorbance
mg/L
0 0
F-882-3 1.64 0.01
10 0.06
20 0.12
30 0.18
40 0.25
15

16. A-3614 91.80 0.56
B-1214-0 122.95 0.75
5.11Conclusion
We need to prepared new concentration of standard near to the
concentrations of samples. 100mg/L and 90mg/L
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17. 6. Title : Oil & Grease Analysis
6.1 Method#: 5520 B. Partition Gravimetric Method
6.2Analytes:
Sample ID#: A – 41202
Sample ID#: A – 41201
6.3 Prepared by: Robert and Rodney
6.4 Date Due: Thursday, May 6th, 2010
6.5 Objective: To determine the dissolved or emulsified oil and grease in
unknown samples by using partition gravimetric method.
6.6The Sample Handling and Preservation
a) Preserve by refrigeration at 4 ⁰C
b) If analysis is delayed for more than a few days, the sample is
acidified with 5 mL of 1:1 HCl
c) Do not exceed the recommended holding time of 28 days
6.7Data Analysis
Table No 1Gravimetric difference of Standard
(Wt of flask w/
Sample Wt of wt of flask Concentration
sample- Wt. of
ID Sample Date Amount empty w/sample Oil & Grease % Recovery
empty flask)
Used (L) flask (g) (g) (mg) (mg/L)
Standard 4/24/2010 1.00 80.4534 81.2052 751.80 751.80 75 %
Standard 4/26/2010 1.00 102.5927 103.5560 963.30 963.30 96 %
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18. Table No 2 Gravimetric difference for samples
(Wt of flask
Sample Concentration
Wt of empty wt of flask wt of flask w/sample w/sample-
ID Sample Amount Oil & Grease
flask (g) w/sample (g) (g) Average Wt. of empty
Used (L) (mg/L)
flask) (mg)
Average(W1,W2,W3
W1 W2 W3
)
Standard 1.00 102.5927 103.5560 103.5560 103.5560 963.30 963.3
A-41202 0.97 1450.5
105.2265 106.6334 106.6334 106.6334 106.6334 1406.95
A-41201 0.97 386.2
106.8300 107.2046 107.2046 107.2046 107.2046 374.60
6.8 Calculation
For Sample A- 41202
Grease and oil, mg/L = (R-B) x 1000
mL sample
R = 106.6334 g = 106633.4 mg
18

19. B = 105.2265 g= 105226.5 mg
Grease and oil, mg/L = (106633.4 mg - 105226.5 mg ) x 1000
970 mL sample
Grease and oil, mg/L = 1450.5 mg/L
19

20. 7. Title: Hardness Analysis
7.1 Method#: 2340 C. EDTA Titrimetric Method
7.2 Analytes:
Sample ID#: A-7543-b
Sample ID#: B - 1500
Sample ID#: B – 1214-0
Sample ID#: F – 882-3
Sample ID#: C – 222-4
Sample ID#: A – 3614
7.3 Prepared by: Dynicia
7.4 Date Due: Thursday, April 22th, 2010
7.5 Objective: To determine hardness by EDTA titrimetric method.
7.6The Sample Handling and Preservation
a) Preserve by refrigeration at 4 ⁰C
b) The maximum holding for samples is 28 days
7.7 Data Analysis
Table No 1
Titrant Titrant CaCO3 CaCO3
Titrant (EDTA) Titrated
Sample ID Volume Volume Concentration Concentration
Concentration(M) Volumen (mL)
(mL) (mL) (mg/L) (mg/L)
Run N1 RunN2
A-7543-b 1.80 1.80 0.01 0.025 0.7200 0.7200
B - 1500 3.61 13.40 0.01 0.025 1.4440 5.3600
B – 1214-0 5.00 4.90 0.01 0.025 2.0000 1.9600
F-882-3 0.01 0.61 0.01 0.025 0.0040 0.2440
C – 222-4 3.20 4.51 0.01 0.025 1.2800 1.8040
A – 3614 7.81 28.50 0.01 0.025 3.1240 11.4000
20

21. A-7543-b
2.41 4.60 0.01 0.025 0.9640 1.8400
Duplicate
Blank 0.01 0.01 0.01 0.025 0.0040 0.0040
Table No 2
CaCO3
Sample ID Concentration
(mg/L)
A-7543-b 0.7200
B - 1500 5.3600
B – 1214-0 1.9600
F-882-3 0.2440
C – 222-4 1.8040
A – 3614 11.4000
A-7543-b Duplicate 1.8400
Blank 0.0040
7.8Calculation
Hardness (EDTA),as mg CaCO3/L = A x B x 1000
mL sample
Where
A = mL titration for sample and
B = mg CaCO3, equivalent to 1.00 mL EDTA titrant
For sample A-7543-b
Hardness (EDTA),as mg CaCO3/L = 1.80 mL x 0.01 x 1000
25 mL sample
Hardness (EDTA),as mg CaCO3/L = 0.72 mg CaCO3/L
21

22. 8. Title : Setteable Solids
8.1 Method#: 2540 F Settleable Solids
8.2 Analyte: Filtrated water Sample ID –G445-0
8.3 Prepared by: Robert
8.4 Date Due: Thursday, April 22th, 2010
8.5 Objective: To determine settleable solids in water.
8.6 Data Analysis: Volume = 31mL
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