GUTTER SIMULATION
Introduction
In order to simulate actual conditions of water testing
after a rain, Mrs. Reuter has created an experiment that involves
varied tests using water in various gutters. Practicing in the
lab may prove to be helpful in a true testing period. In order to
complete the experiment, obtain:
1. three metallic gutters
2. access to a water faucet
3. materials for each different test (Eg. zinc, pH, etc. - listed
below)
4. DR 2010
PROCEDURE:
1. Label the gutters: 1, 2, and 3.
2. Add water to gutters filling them halfway up.
2. Add 100 mL of HCl to Gutter 2 and 400 mL of HCL to Gutter 3.
3. Do pH, Conductivity, Turbidity, and Temperature Procedure for
each gutter.
4. Do Copper Procedure for each gutter.
5. Do Zinc Procedure for each gutter.
6. Record Results in provided table.
Gutter Number
Material_________ |
---pH--- |
Conductivity |
Temperature (°C) |
Zn(mg/L) |
Cu(ug/L) |
Pb(ug/L) |
| 1 |
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| 2 |
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| 3 |
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pH, Conductivity,
Turbidity, and Temperature
1) Attach the sensors, beginning with Channel 1
Channel 1 pH
Channel 2 Conductivity (dissolved solids)
Channel 3 Temperature
Channel 4 Turbidity or nitrates or calcium or dissolved oxygen or
flow rate
2) Turn on calculator
3) Select APPS key on calculator
4) Select Datamate
5) Let it autodetect the sensors and you will see the channel
number and the names of the sensors with the readings (data)
6) Take readings and record data on table.
7) If it does not autodetect, then select 1 (Set-Up) and select
channel, and choose sensor (If conductivity use the 0-2000
setting.) and the channel will have the sensor set up. Repeat for
other sensors that are not autodetect.
Special notes:
pH sensor- Be very careful with solution. Unscrew cap before
removing sensor. Cover top with Parafilm. Then be careful with
the solution. Rinse the sensor and take reading. Rinse sensor and
return to solution. Be sure to unscrew the bottle before you push
the sensor in. Also be sure that the top is screwed on well. Be
sure it is not leaking. Place the sensor into a separate plastic
bag just in case it leaks.
If necessary:
Calibration via Y Intercept Method-
Go to Set up (number 1) select the channel with the pH sensor,
press 2 for calibration, press 3 for manual entry, and enter Y
intercept that is labeled on the sensor.
Turbidity Sensor- Be careful with the bottles. Do not empty the
cloudy standard bottle. Make sure the outside is dry and the
triangle match.
Calibration:
First Point-
Fill blank cell with distilled water, and place into the sensor.
Go to set up (number 1) locate the channel with the turbidity
sensor and press 2 which is calibrate. Once the display is
visible enter 0 for the first point.
Second point-
Place standard cell (cloudy solution) into sensor. Enter 100 for
second point.
It will return to channel display. Press 1 for OK and your
turbidity sensor will be calibrated.
Copper
Click here for a step by step demonstration with pictures
1. Enter 135 then hit enter. Rotate the dial to 560 mn. The
display will show Zero sample then
mg/L Cu FV.
2. Insert the cell riser into the cell holder.
3. Fill a sample cell with 10 mL of the sample.
4. Add the contents of one CuVer Copper Reagent powder pillow to
the sample cell.
5. Allow for a two minute reaction period.
6. After two minutes fill another 10 mL sample cell with 10mL of
the sample. This is the blank.
7. Place the blank into the cell holder, close the light sheild
and pres zero. The display will show
Zeroing . . . then 0.00 mg/L Cu FV.
8. Then place the prepared sample into the cell holder close the
light sheild and hit Read.
Copper
|
|
|
| Enter 135 then hit enter.
Rotate the dial to 560 mn. The display will show Zero
sample then mg/L Cu FV. |
Insert the cell riser into
the cell holder. |
Fill a sample cell with 10 mL
of the sample. |
|
|
|
| Add the contents of one CuVer
Copper Reagent powder pillow to the sample cell. |
Allow for a two minute
reaction period. |
After two minutes fill
another 10 mL sample cell with 10mL of the sample. This
is the blank. |
|
|
| Place the blank into the cell
holder, close the light sheild and pres zero. The display
will show Zeroing . . . then 0.00 mg/L Cu FV. |
Then place the prepared
sample into the cell holder close the light sheild and
hit Read. |
Zinc
Click here for a step by
step demonstration with pictures
- Enter 780 then hit Enter. Rotate the dial to 620 mn.
The display will show Zero Sample then mg/L Zn.
- Insert the cell riser into the cell holder.
- Fill a 25 mL graduated cylinder with 20mL of the
sample.
- Add the contents of one ZincoVer 5 Reagent powder
pillow. Cover and dissolve.
- Measure 10 mL of the solution and pour it into a 10 mL
sample cell. This will be the blank.
- Add 0.5 mL of cyclohexanone to the remaining solution
in the cylinder. Cover and dissolve for 30 seconds.
- Allow for a three minute reaction time.
- During the reaction preiod pour the solution into a
sample cell.
- After three minutes place the blank into the cell
holder, close the light sheild, and press Zero. The
display will show Zeroing . . . then 0.00 mg/L Zn.
- Then place te prepared sample into the cell holder,
close the light sheild and hit Read.
Zinc
|
|
|
| Enter 780 then hit Enter.
Rotate the dial to 620 mn. The display will show Zero
Sample then mg/L Zn. |
Insert the cell riser into
the cell holder. |
Fill a 25 mL graduated
cylinder with 20mL of the sample. |
|
|
|
| Add the contents o one
ZincoVer 5 Reagent powder pillow. Cover and dissolve. |
Measure 10 mL of the solution
and pour it into a 10 mL sample cell. This will be the
blank. |
Add 0.5 mL of cyclohexanone
to the remaining solution in the cylinder. Cover and
dissolve for 30 seconds. |
|
|
|
| Allow for a three minute
reaction time. |
During the reaction preiod
pour the solution into a sample cell. |
After three minutes
place the blank into the cell holder, close the light
sheild, and press Zero. The display will show Zeroing . .
. then 0.00 mg/L Zn. |
|
| Then place te prepared sample
into the cell holder, close the light sheild and hit
Read. |