Evidence map›Paper›PMID 25763302›Full record

ArticleSpringerPlus2015

Phosphate fertilizer is a main source of arsenic in areas affected with chronic kidney disease of unknown etiology in Sri Lanka.

Channa Jayasumana, Saranga Fonseka, Ashvin Fernando, Kumudika Jayalath, Mala Amarasinghe, Sisira Siribaddana, Sarath Gunatilake, Priyani Paranagama

Open access · diamondAbstract read
In one paragraph

Article in SpringerPlus, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed
7.3field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

42 citing papers in PubMed, 222 citations in OpenAlex.

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  6. Tampons as a source of exposure to metal(loid)s.Environment international · 2024
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  15. Review
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  17. The Tolerance ofPlants (Basel, Switzerland) · 2021
    Article
  18. Article
  19. Article
  20. Dietary exposure assessment of cadmium, arsenic, and lead in market rice from Sri Lanka.Environmental science and pollution research international · 2020
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 3 institutions in 2 countries.

Channa JayasumanaFaculty of Medicine & Allied Sciences, Rajarata University of Sri Lanka, Saliyapura, 50008 Sri Lanka.
Saranga FonsekaFaculty of Science, University of Kelaniya, Colombo, 11600 Sri Lanka.
Ashvin FernandoCollege of Chemical Sciences, Institute of Chemistry, Rajagiriya, 10100 Sri Lanka.
Kumudika JayalathFaculty of Science, University of Kelaniya, Colombo, 11600 Sri Lanka.
Mala AmarasingheFaculty of Science, University of Kelaniya, Colombo, 11600 Sri Lanka.
Sisira SiribaddanaFaculty of Medicine & Allied Sciences, Rajarata University of Sri Lanka, Saliyapura, 50008 Sri Lanka.
Sarath GunatilakeDepartment of Health Science, California State University Long Beach, Long Beach, CA 90840 USA.
Priyani ParanagamaFaculty of Science, University of Kelaniya, Colombo, 11600 Sri Lanka.
University of Kelaniya · LKRajarata University of Sri Lanka · LKCalifornia State University, Long Beach · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Chronic Kidney Disease of unknown etiology (CKDu) has escalated into an epidemic in North Central Province (NCP) and adjacent farming areas in the dry zone of Sri Lanka. Studies have shown that this special type of CKD is a toxic nephropathy and arsenic may play a causative role along with a number of other heavy metals. We investigated the hypothesis that chemical fertilizers and pesticide could be a source of arsenic. 226 samples of Fertilizers and 273 samples of pesticides were collected and analyzed using atomic absorption spectrometry and inductively coupled plasma mass spectrometry for arsenic and other heavy metals in two university laboratories. Almost all the agrochemicals available to the farmers in the study area are contaminated with arsenic. The highest amount was in triple super phosphate (TSP) with a mean value of 31 mg/kg. Also TSP is a rich source of other nephrotoxic metals including Cr, Co, Ni, Pb and V. Annually more than 0.1 million tons of TSP is imported to Sri Lanka containing approximately 2100 kg of arsenic. The next highest concentration was seen in the rock phosphate obtained from an open pit mine in NCP (8.56 mg/kg). Organic fertilizer contained very low amounts of arsenic. Arsenic contamination in pesticides varied from 0.18 mg/kg to 2.53 mg/kg although arsenic containing pesticides are banned in Sri Lanka. Glyphosate the most widely used pesticide in Sri Lanka contains average of 1.9 mg/kg arsenic. Findings suggest that agrochemicals especially phosphate fertilizers are a major source of inorganic arsenic in CKDu endemic areas. Organic fertilizer available in Sri Lanka is comparatively very low in arsenic and hence the farmers in CKDu endemic areas in Sri Lanka should be encouraged to minimize the use of imported chemical fertilizer and use organic fertilizers instead.

Indexed as

ArsenicChronic kidney disease of unknown etiologyFertilizerPesticidesSri Lanka

Identifiers

PMID25763302
PMCPMC4348354
OpenAlexW2142147066

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.