PROJECT DATA TABLE:
Plant Sample Number^*1	Metal Concentration (ppm) of Soil in Which Plants were Grown	Growth Length (mm) of Plant Stem after Growth in Metal Concentration^*2	Dry Weight of Plant (grams)^*3	Concentrat-ion of Zn in Ashed Plant Leaves in ppm*4
C1	--------------------	7	1.65
C2	--------------------	6	1.16
C3	--------------------	10	1.59
C4	--------------------	10	1.68	451
C5	--------------------	7	1.44	127
C6	--------------------	8	1.51	397
Zn1	500	10	1.55	8745
Zn2	500	6	1.43
Zn3	300	8	2.78	750
Zn4	300	11	2.23
Zn5	100	6	1.92	441
Zn6	100	8	1.65
Cd1	500	1	1.29	328
Cd2	500	3	1.10
Cd3	300	5	0.89	209
Cd4	300	4	0.97
Cd5	100	6	1.03	267
Cd6	100	7	0.94
Pb1	500	2	1.15	333
Pb2	500	0	1.20
Pb3	300	1	1.31	300
Pb4	300	2	0.81
Pb5	100	2	1.46	355
Pb6	100	1	0.83

*1

C (1-6) plant control samples

Zn (1-6) plant samples grown in Zinc concentrations

Cd (1-6) plant samples grown in Cadmium concentrations

Pb (1-6) plant samples grown in Lead concentrations

*2

difference in stem length after the 14 days of plant growth in metal concentrations--stems were those growing on the second node on the main plant stem above the cotyledon leaf and measured from the node to the first leaf

*3

after 27 days of growth of control plants and plants in metal concentrations, samples were cut 2.54 cm above soil surface, placed in an oven at 80 degrees Celsius for 24 hours and weighed

*4

leaves were ashed at 700 degrees Celsius for 2 hours and dissolved in Nitric acid in a heated shaker bath--the concentration of Zinc in the leaves was determined by atomic absorption analysis to show if the

uptake of Zn concentrations contributed by the plant food and the

potted soil was blocked by the Cd and Pb concentrations and if the

concentration of Zn in the plant was proportional to the Zn concentra-

tions added to the soil of the Zn test plants