Heavy
Metal & VOC Studies:
The supplier Sylva uses is constantly
monitoring the impurity levels in the colorant manufactured
at their facility. This colorant was analyzed for heavy metals
and also for Volatile Organic Compounds (VOC). No detectable
VOC levels have been found. The summary of heavy metals content
and the data interpretation is presented as follows:
Compound |
Soil
Screening Levels (SSL)* |
Levels
(ppm) in |
Levels
(ppm) after |
|
(EPA-s
guidance values) |
color
concentrate |
application
on mulch |
Chromium
(total) |
390
ppm |
98.2 |
0.49 |
Lead |
400
ppm |
24.5 |
0.12 |
Zinc |
23,000
ppm |
103.4 |
0.52 |
| • |
Soil
screening levels based on direct ingestion of soil. |
| • |
Based
on heavy metals data - the concentrated colorant levels
are below EPA Superfund soil screening levels (SSL). SSL
levels were used as guidelines for this data interpretation. |
http://www.epa.gov/superfund/resources/soil/appd_a.pdf
Toxicity
Studies | Heavy Metal & VOC Studies | Arsenic
Study |
