Abstract
The tailing ponds of lead-zinc mines are artificial environment pollution sources, and also important dangerous sources of heavy metal contamination in lead-zinc mining areas. To study the effects of Ethylene Diamine Tetracetic Acid (EDTA) and Diethylene Triamine Penlaacetic Acid (DTPA) on phytoremediation of lead-zinc mining area soil, two chelators (EDTA and DTPA) were used in enrichment plant ryegrass to improve the uptake of Pb and Zn from soil. The results showed that when the doses of 0, 0.5, 1 and 2 mmol/kg EDTA and DTPA were used, the biomass of ryegrass (Lolium multiflorum Lam.) and its nutrient (N, P, K, Ca and Mg) content increased, whereas EDTA and DTPA with a dose of 4 mmol/kg decreased the biomass of ryegrass and its nutrient (N, P, K, Ca and Mg) content. EDTA and DTPA significantly enhanced the contents of Zn and Pb in ryegrass as compared with the control. As for Pb, the content of Pb in root and shoot reached a maximum of 2730.54 and 2484.42 mg/kg respectively when the dose of EDTA and DTPA was 2 mmol/kg. In the case of Zn, the content of Zn in root and shoot reached a maximum of 2428.37 and 2010.43 mg/kg respectively. The total Pb and Zn accumulations and translocation ratio in ryegrass had also been enhanced. The results indicated that EDTA and DTPA had great potential to be used for ryegrass to remedy Pb and Zn contamination soil of lead-zinc mining area, but should be used cautiously because of their environmental risks.
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Claims 13
Claim · model-written summary
0.5, 1 and 2 mmol/kg EDTA and DTPA increased biomass of ryegrass.
- Treatment
- 0.5, 1 and 2 mmol/kg EDTA and DTPAe0
- Outcome
- biomass of ryegrasse0
- Direction
- increasede0
- Comparator
- 0e0
LoliumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that when the doses of 0, 0.5, 1 and 2 mmol/kg EDTA and DTPA were used, the biomass of ryegrass (Lolium multiflorum Lam.) and its nutrient (N, P, K, Ca and Mg) content increased, whereas EDTA and DTPA with a dose of 4 mmol/kg decreased the biomass of ryegrass and its nutrient (N, P, K, Ca and Mg) content.”
Claim · model-written summary
0.5, 1 and 2 mmol/kg EDTA and DTPA increased nutrient (N, P, K, Ca and Mg) content.
- Treatment
- 0.5, 1 and 2 mmol/kg EDTA and DTPAe0
- Outcome
- nutrient (N, P, K, Ca and Mg) contente0
- Direction
- increasede0
- Comparator
- 0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that when the doses of 0, 0.5, 1 and 2 mmol/kg EDTA and DTPA were used, the biomass of ryegrass (Lolium multiflorum Lam.) and its nutrient (N, P, K, Ca and Mg) content increased, whereas EDTA and DTPA with a dose of 4 mmol/kg decreased the biomass of ryegrass and its nutrient (N, P, K, Ca and Mg) content.”
Claim · model-written summary
4 mmol/kg decreased biomass of ryegrass.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that when the doses of 0, 0.5, 1 and 2 mmol/kg EDTA and DTPA were used, the biomass of ryegrass (Lolium multiflorum Lam.) and its nutrient (N, P, K, Ca and Mg) content increased, whereas EDTA and DTPA with a dose of 4 mmol/kg decreased the biomass of ryegrass and its nutrient (N, P, K, Ca and Mg) content.”
Claim · model-written summary
4 mmol/kg decreased nutrient (N, P, K, Ca and Mg) content.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that when the doses of 0, 0.5, 1 and 2 mmol/kg EDTA and DTPA were used, the biomass of ryegrass (Lolium multiflorum Lam.) and its nutrient (N, P, K, Ca and Mg) content increased, whereas EDTA and DTPA with a dose of 4 mmol/kg decreased the biomass of ryegrass and its nutrient (N, P, K, Ca and Mg) content.”
Claim · model-written summary
EDTA and DTPA significantly enhanced contents of Zn in ryegrass versus control.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“EDTA and DTPA significantly enhanced the contents of Zn and Pb in ryegrass as compared with the control.”
Claim · model-written summary
EDTA and DTPA significantly enhanced contents of Pb in ryegrass versus control.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“EDTA and DTPA significantly enhanced the contents of Zn and Pb in ryegrass as compared with the control.”
Claim · model-written summary
Pb content in ryegrass root reached a maximum of 2730.54.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As for Pb, the content of Pb in root and shoot reached a maximum of 2730.54 and 2484.42 mg/kg respectively when the dose of EDTA and DTPA was 2 mmol/kg.”
t0“Ryegrass”
Claim · model-written summary
Pb content in ryegrass shoot reached a maximum of 2484.42 mg/kg.
- Organ / stage
- shoote0
- Treatment
- 2 mmol/kge0
- Outcome
- content of Pbe0
- Direction
- maximume0
- Value
- 2484.42 mg/kge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As for Pb, the content of Pb in root and shoot reached a maximum of 2730.54 and 2484.42 mg/kg respectively when the dose of EDTA and DTPA was 2 mmol/kg.”
t0“Ryegrass”
Claim · model-written summary
Zn content in ryegrass root reached a maximum of 2428.37.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the case of Zn, the content of Zn in root and shoot reached a maximum of 2428.37 and 2010.43 mg/kg respectively.”
t0“Ryegrass”
Claim · model-written summary
Zn content in ryegrass shoot reached a maximum of 2010.43 mg/kg.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the case of Zn, the content of Zn in root and shoot reached a maximum of 2428.37 and 2010.43 mg/kg respectively.”
t0“Ryegrass”
Claim · model-written summary
EDTA and DTPA enhanced ryegrass total Pb and Zn accumulations.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The total Pb and Zn accumulations and translocation ratio in ryegrass had also been enhanced.”
e1“EDTA and DTPA significantly enhanced the contents of Zn and Pb in ryegrass as compared with the control.”
Claim · model-written summary
EDTA and DTPA enhanced ryegrass translocation ratio.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The total Pb and Zn accumulations and translocation ratio in ryegrass had also been enhanced.”
e1“EDTA and DTPA significantly enhanced the contents of Zn and Pb in ryegrass as compared with the control.”
Claim · model-written summary
The authors see EDTA and DTPA as promising for ryegrass remediation of Pb and Zn contaminated soil, while urging caution about environmental risks.
- Treatment
- EDTA and DTPAe0
- Outcome
- remedy Pb and Zn contamination soile0
- Qualifier
- should be used cautiously because of their environmental riskse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results indicated that EDTA and DTPA had great potential to be used for ryegrass to remedy Pb and Zn contamination soil of lead-zinc mining area, but should be used cautiously because of their environmental risks.”
The same questions in other papers
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- positive
- positive
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1 paper more in this group
See all 5 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.