Los Angeles Trade Technology College



    Chemical Technology Program



Courses: Chemical Technology 131- 142




     ...
Contents

1. pH Analysis                                  3

2. Total Dissolved Solid Dried at 180 ⁰C        4

3. Total S...
1.   Title : pH Analysis

     1.1.   Method#: 4500-H+ A. pH Value

     1.2.   Analytes:

                Sample ID#: A-7...
2.   Title: Total Dissolved Solid Dried at 180 ⁰C

        2.1 Method#: 2540 C. Total Dissolved Solid Dried at 180 ⁰C

   ...
A-3614      68.1818        66.1852      66.1835            66.1830              66.1830            66.1832
A-7543-b
Duplic...
mg Dissolved solids/L = (58.9638 - 58.9607)x1000

                                        25 mL sample

             mg Di...
3.5 Objective: To determine the concentration of total suspended solid in

    the unknown samples.

3.6The Sample Handlin...
B-1500         17650.3     17638.4      -11.9   -477.3
   C-222-4         17232.9     17233.0       0.1      2.7
   A-7543...
Sample ID#: A – 3614



4.   Title: Chlorine Analysis
                              -
     4.1 Method#: 4500-Cl C. Mercuri...
C – 222-4
                  Duplicate       2.00


         Table No2: Calculating chloride concentration in samples

    ...
5.   Title: Determination of Sulfate

     5.1 Method# : 4500-SO42- E. Turbidimetric Method

     5.2 Analytes:

         ...
10          0.06
                   20          0.12
                   30          0.18
                   40          0....
b)   Sample Calibration Curve




                     13
14
5.10Calculation

    a)     Calculating volumes (mL) for standard concentration:

         Prepared Na2SO4 149.7 mg/1L
   ...
A-3614           91.80          0.56
              B-1214-0         122.95         0.75


5.11Conclusion

   We need to pr...
6.    Title : Oil & Grease Analysis

            6.1 Method#: 5520 B. Partition Gravimetric Method

            6.2Analyte...
Table No 2 Gravimetric difference for samples
                                                                            ...
B = 105.2265 g= 105226.5 mg



Grease and oil, mg/L = (106633.4 mg - 105226.5 mg ) x 1000

                        970 mL ...
7.   Title: Hardness Analysis

        7.1 Method#: 2340 C. EDTA Titrimetric Method

        7.2 Analytes:

              ...
A-7543-b
                 2.41      4.60            0.01             0.025         0.9640   1.8400
Duplicate
  Blank      ...
8.   Title : Setteable Solids

     8.1 Method#: 2540 F Settleable Solids

     8.2 Analyte: Filtrated water Sample ID –G4...
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Los angeles trade technology

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team work quantitative analysis and qualitative analysis
by rodney pujada LATTC

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Los angeles trade technology

  1. 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. 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. 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. 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. 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. 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 6
  7. 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 7
  8. 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. 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 9
  10. 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 10
  11. 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. 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. 13. b) Sample Calibration Curve 13
  14. 14. 14
  15. 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. 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 16
  17. 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 % 17
  18. 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. 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. 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. 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. 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 22

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