analysis chemical technology report from teamwork project
TRANSCRIPT
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8/7/2019 Analysis Chemical technology report from Teamwork project
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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
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Contents
1. pH Analysis 3
2. Total Dissolved Solid Dried at 180 C 4
3. Total Suspended Solids Dried at 103-105 C 6
4. Chlorine Analysis 8
5. Determination of Sulfate 11
6. Oil & Grease Analysis 17
7. Hardness Analysis 19
8. Sewage Water Analysis 20
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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
Colorle
ss
B-1500 5.58
Colorle
ss
B-1214-0 2.56
Colorle
ss
F-882-3 6.99
Colorle
ss
C-222-4 3.12
Colorle
ss
duplicate
1.7. Conclusion
All of samples are acid and colorless
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2. Title: Total Dissolved Solid Dried at 180 C
2.1 Method#: 2540 C. Total Dissolved Solid Dried at 180 C
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.
2.6 The Sample Handling and Preservation
a) Preserve by refrigeration at 4 C
b) The maximum holding for samples is 28 days
2.7 Data Analysis
Table No 1: Experimental Data
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0
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0
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10
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10
4/21/20
10 Sample
ID# Dish empty 7:30 AM 9:45 AM 9:00 AM 9:00 AM
Dish with
sample
grams
reference(
gr) W1(gr) W2 (gr) W3 (gr)Average(W1,W2,W
3)
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 66.4687A-3614 68.1818 66.1852 66.1835 66.1830 66.1830 66.1832
A-7543-b
Duplicat
e 68.1215 68.1221 68.1200 66.1198 68.1193 67.4530
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Table No 2: Result of gravimetric measures
B A (A-B) mg/LtSample
ID#
Dish
empty
Dish with
sampleGravimetric
Difference to 25 mL
mg
Average(W1,W2,W3
) mg (B-A)/0.025A-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
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1998.6333 -79945.3
A-7543-b
Duplicate 68121.5 67453.0 -668.4667 -26738.7
2.8 Calculations
a) Calculating total dissolved solids concentration:
A = weight of dried residue + dish, mg
B = weight of dish, mg
For Sample ID#: A-7543-b
A = 58.9638
B = 58.9607
mg Dissolved solids/L = (58.9638 - 58.9607)x1000
25 mL sample
mg Dissolved solids/L = 125.3
2.9 Conclusion
We made a mistakes in samples:
Sample ID#: B 1214-0
Sample ID#: F 882-3
Sample ID#: A 3614
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mg Dissolved solids/L = ( A B )x1000mL sample
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A-7543-b
Duplicat
e 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
Sample ID
Dish
empty
Dish with
sampleGravimetric
Difference to 25 mL
mgAverage(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
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
3.8 Calculationa) Calculating total suspended solids concentration:
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
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mg suspended solids/L = ( A B )x1000
mL sample
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3.9 Conclusion
We made a mistake in sample
Sample ID#: A-7543-b and duplicate
Sample ID#: B - 1500
Sample ID#: F 882-3
Sample ID#: A 3614
4. Title: Chlorine Analysis
4.1 Method#: 4500-Cl-C. Mercuric Nitrate Method
4.2 Analytes:
Sample ID#: A-7543-bSample 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 mercury4.6 The Sample Handling and Preservation
a) Preserve by refrigeration at 4 C
b) The maximum holding for samples is 28 days
4.7 Data Analysis
Table No 1 : Volume of Mercuric Nitrate
Sample IDTitrantVolume
(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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C 222-4Duplicate 2.00
Table No2: Calculating chloride concentration in samples
Sample IDTitrantVolume
(mL)
Titrant(MercuricNitrate)
Concentration(N)
TitratedVolumen
(mL)
ChlorideConcentrati
on (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 222-4Duplicate
2.00 0.0141 50 19.99
4.8 Calculation
Prepared Hg(NO3)2 Concentration = 0.0141 N
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 samplemg/L Cl = 7.00 mg/Cl
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mg/L Cl = (A B) x N x 35.450
mL sample
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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.
5.7 The Sample Handling and Preservation
a) Preserve by refrigeration at 4 C
b) The maximum holding for samples is 28 days
5.8 Data Analysis
Table No 1 Sulfate Calibration Curve
Concentrati
on
Absorbanc
e
mg/L
0 0
10 0.06
20 0.1230 0.18
40 0.25
Table No 2 Sample Calibration Curve
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Sample ID Absorbance
F-882-3 0.01
F-882-3
Duplicate 0.01A-3614 0.56
B-1214-0 0.75
5.9 Graphic
a) Standard Calibration Curve
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b) Sample Calibration Curve
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5.10 Calculation
a) Calculating volumes (mL) for standard concentration:
Prepared Na2SO4 149.7 mg/1LPrepared dilution of 10, 20, 30, 40 mg/L
Where:
C1 = sulfate concentration = 149.7 mg/LV1 = unknown volume in mLC2 = sulfate dilution concentration = 10 mg/1LV2 = volume of dilution concentration (10 mg/L) = 100 mL
V1 = (C2*V2) / C1
V1 = 6.68 mL
b) Calculating sample concentration by Calibration Curve
Sample
ID Concentration
Absorbanc
e
mg/L
0 0
F-882-3 1.64 0.01
10 0.06
20 0.12
30 0.18
40 0.25
A-3614 91.80 0.56
B-1214-0 122.95 0.75
5.11 Conclusion
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Concentrat
ion
volume for
dilution
mg/L mL
10 6.68
20 13.36
30 20.04
40 26.7
C1*V1 = C2*V2
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We need to prepared new concentration of standard near to the
concentrations of samples. 100mg/L and 90mg/L
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6. Title : Oil & Grease Analysis
6.1 Method#: 5520 B. Partition Gravimetric Method
6.2 Analytes:
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.
6.6 The Sample Handling and Preservation
a) Preserve by refrigeration at 4 C
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
6.7 Data Analysis
Table No 1Gravimetric difference of Standard
IDSample Date
Sample
AmountUsed(L)
Wt of
emptyflask(g)
wt of
flaskw/sample(g)
(Wt offlask
w/sample-Wt. ofempty
flask) (mg)
Concentrat
ion Oil &Grease(mg/L)
%Recovery
Standard
4/24/2010
1.0080.453
4 81.2052 751.80751.80 75 %
Standard
4/26/2010
1.00102.59
27 103.5560 963.30963.30 96 %
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Table No 2 Gravimetric difference for samples
IDSample
Sample
Amount
Used(L)
Wt ofempty
flask (g)
wt offlask
w/sample(g)
wt of flask
w/sample (g)Average
(Wt offlask
w/sample-Wt. ofemptyflask)
(mg)
Concentration Oil &Grease(mg/L)
W1 W2 W3Average(W1,W
2,W3)
Standard
1.00102.59
27103.55
60103.55
60 103.5560 963.30963.3
A-41202
0.97105.22
65106.63
34106.63
34106.63
34 106.6334 1406.951450.5
A-41201
0.97106.83
00107.20
46107.20
46107.20
46 107.2046 374.60386.2
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
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
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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.
7.6 The Sample Handling and Preservation
a) Preserve by refrigeration at 4 C
b) The maximum holding for samples is 28 days
7.7 Data Analysis
Table No 1
Sample ID
Titrant
Volume
(mL)
Titrant
Volume (mL)
Titrant (EDTA)
Concentration(M)
Titrated
Volumen(mL)
CaCO3
Concentration (mg/L)
CaCO3
Concentration (mg/L)
RunN1
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
A-7543-bDuplicate
2.41 4.60 0.01 0.025 0.9640 1.8400
Blank 0.01 0.01 0.01 0.025 0.0040 0.0040
Table No 2
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Sample IDCaCO3
Concentration(mg/L)
A-7543-b 0.7200
B - 1500 5.3600B 1214-0 1.9600
F-882-3 0.2440
C 222-4 1.8040
A 3614 11.4000
A-7543-bDuplicate
1.8400
Blank 0.0040
7.8 Calculation
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
8. Title : Setteable Solids
8.1 Method#: 2540 F Settleable Solids
8.2 Analyte: Filtrated water from w
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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