| polymerase chain reaction(noun, expression, study, treatment, science) |
| quantitative chemical analysis(noun, expression, study, treatment, science) |
| quantitative determination(noun, expression, study, treatment, science) |
| radioactive material(noun, expression, study, treatment, science) |
| radiochemical(noun, study, treatment, science, knowledge) |
| receptor(noun, form, study, science, field) |
| sampling(noun, form, study, science, field) |
| scintillation counter(noun, expression, study, treatment, science) |
| sink(noun, form, study, science, field) |
| soil chemistry(noun, expression, form, study, science) |
| soil environment(noun, expression, form, study, science) |
| spectrometric method(noun, expression, study, treatment, science) |
| stratospheric ozone(noun, expression, form, study, science) |
| tandem mass spectrometry(noun, expression, study, treatment, science) |
| titrimetric method(noun, expression, study, treatment, science) |
| toxic substance(noun, expression, form, study, science) |
| toxicity evaluation(noun, expression, study, treatment, science) |
| uncontaminated environment(noun, expression, form, study, science) |
| water environment(noun, expression, form, study, science) |
| water quality(noun, expression, study, treatment, science) |