International Journal of Environmental Science and Technology

International Journal of Environmental Science and Technology (IJEST) is an international scholarly refereed research journal which aims to promote the theory and practice of environmental science and technology, innovation, engineering and management. A broad outline of the journal's scope includes; peer reviewed original research articles, case and technical reports, reviews and analyses papers, short communications and notes to the editor, in interdisciplinary information on the practice and status of research in environmental science and technology, both natural and man made. The main aspects of research areas include, but are not exclusive to; environmental chemistry and biology, environments pollution control and abatement technology, transport and fate of pollutants in the environment, concentrations and dispersion of wastes in air, water, and soil, point and non-point sources pollution, heavy metals and organic compounds in the environment, atmospheric pollutants and trace gases, solid and hazardous waste management; soil biodegradation and bioremediation of contaminated sites; environmental impact assessment, industrial ecology, ecological and human risk assessment; improved energy management and auditing efficiency and environmental standards and criteria.

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Quartiles

The set of journals have been ranked according to their SJR and divided into four equal groups, four quartiles. Q1 (green) comprises the quarter of the journals with the highest values, Q2 (yellow) the second highest values, Q3 (orange) the third highest values and Q4 (red) the lowest values.

Category	Year	Quartile
Agricultural and Biological Sciences (miscellaneous)	2006	Q3
Agricultural and Biological Sciences (miscellaneous)	2007	Q2
Agricultural and Biological Sciences (miscellaneous)	2008	Q2
Agricultural and Biological Sciences (miscellaneous)	2009	Q2
Agricultural and Biological Sciences (miscellaneous)	2010	Q1
Agricultural and Biological Sciences (miscellaneous)	2011	Q1
Agricultural and Biological Sciences (miscellaneous)	2012	Q1
Agricultural and Biological Sciences (miscellaneous)	2013	Q1
Agricultural and Biological Sciences (miscellaneous)	2014	Q1
Agricultural and Biological Sciences (miscellaneous)	2015	Q2
Agricultural and Biological Sciences (miscellaneous)	2016	Q2
Agricultural and Biological Sciences (miscellaneous)	2017	Q2
Agricultural and Biological Sciences (miscellaneous)	2018	Q2
Agricultural and Biological Sciences (miscellaneous)	2019	Q2
Agricultural and Biological Sciences (miscellaneous)	2020	Q2
Agricultural and Biological Sciences (miscellaneous)	2021	Q1
Agricultural and Biological Sciences (miscellaneous)	2022	Q1
Agricultural and Biological Sciences (miscellaneous)	2023	Q1
Environmental Chemistry	2006	Q4
Environmental Chemistry	2007	Q4
Environmental Chemistry	2008	Q4
Environmental Chemistry	2009	Q3
Environmental Chemistry	2010	Q2
Environmental Chemistry	2011	Q1
Environmental Chemistry	2012	Q2
Environmental Chemistry	2013	Q3
Environmental Chemistry	2014	Q2
Environmental Chemistry	2015	Q3
Environmental Chemistry	2016	Q3
Environmental Chemistry	2017	Q3
Environmental Chemistry	2018	Q3
Environmental Chemistry	2019	Q3
Environmental Chemistry	2020	Q3
Environmental Chemistry	2021	Q3
Environmental Chemistry	2022	Q2
Environmental Chemistry	2023	Q3
Environmental Engineering	2006	Q3
Environmental Engineering	2007	Q3
Environmental Engineering	2008	Q3
Environmental Engineering	2009	Q2
Environmental Engineering	2010	Q2
Environmental Engineering	2011	Q1
Environmental Engineering	2012	Q1
Environmental Engineering	2013	Q2
Environmental Engineering	2014	Q1
Environmental Engineering	2015	Q2
Environmental Engineering	2016	Q2
Environmental Engineering	2017	Q2
Environmental Engineering	2018	Q2
Environmental Engineering	2019	Q2
Environmental Engineering	2020	Q2
Environmental Engineering	2021	Q2
Environmental Engineering	2022	Q2
Environmental Engineering	2023	Q2

SJR

The SJR is a size-independent prestige indicator that ranks journals by their 'average prestige per article'. It is based on the idea that 'all citations are not created equal'. SJR is a measure of scientific influence of journals that accounts for both the number of citations received by a journal and the importance or prestige of the journals where such citations come from It measures the scientific influence of the average article in a journal, it expresses how central to the global scientific discussion an average article of the journal is.

Year	SJR
2006	0.203
2007	0.209
2008	0.275
2009	0.552
2010	0.801
2011	1.268
2012	0.840
2013	0.754
2014	0.770
2015	0.568
2016	0.592
2017	0.600
2018	0.580
2019	0.518
2020	0.512
2021	0.555
2022	0.600
2023	0.598

Total Documents

Evolution of the number of published documents. All types of documents are considered, including citable and non citable documents.

Year	Documents
2005	39
2006	68
2007	68
2008	64
2009	76
2010	80
2011	80
2012	79
2013	136
2014	226
2015	372
2016	270
2017	240
2018	246
2019	771
2020	393
2021	328
2022	882
2023	952

Citations per document

This indicator counts the number of citations received by documents from a journal and divides them by the total number of documents published in that journal. The chart shows the evolution of the average number of times documents published in a journal in the past two, three and four years have been cited in the current year. The two years line is equivalent to journal impact factor ™ (Thomson Reuters) metric.

Cites per document	Year	Value
Cites / Doc. (4 years)	2005	0.000
Cites / Doc. (4 years)	2006	0.462
Cites / Doc. (4 years)	2007	0.486
Cites / Doc. (4 years)	2008	0.629
Cites / Doc. (4 years)	2009	1.377
Cites / Doc. (4 years)	2010	3.029
Cites / Doc. (4 years)	2011	4.274
Cites / Doc. (4 years)	2012	2.560
Cites / Doc. (4 years)	2013	2.844
Cites / Doc. (4 years)	2014	2.803
Cites / Doc. (4 years)	2015	2.607
Cites / Doc. (4 years)	2016	2.342
Cites / Doc. (4 years)	2017	2.377
Cites / Doc. (4 years)	2018	2.541
Cites / Doc. (4 years)	2019	2.964
Cites / Doc. (4 years)	2020	2.848
Cites / Doc. (4 years)	2021	3.412
Cites / Doc. (4 years)	2022	3.944
Cites / Doc. (4 years)	2023	3.801
Cites / Doc. (3 years)	2005	0.000
Cites / Doc. (3 years)	2006	0.462
Cites / Doc. (3 years)	2007	0.486
Cites / Doc. (3 years)	2008	0.629
Cites / Doc. (3 years)	2009	1.440
Cites / Doc. (3 years)	2010	3.572
Cites / Doc. (3 years)	2011	4.359
Cites / Doc. (3 years)	2012	2.318
Cites / Doc. (3 years)	2013	2.527
Cites / Doc. (3 years)	2014	2.536
Cites / Doc. (3 years)	2015	2.447
Cites / Doc. (3 years)	2016	2.353
Cites / Doc. (3 years)	2017	2.371
Cites / Doc. (3 years)	2018	2.456
Cites / Doc. (3 years)	2019	2.698
Cites / Doc. (3 years)	2020	2.703
Cites / Doc. (3 years)	2021	3.491
Cites / Doc. (3 years)	2022	3.987
Cites / Doc. (3 years)	2023	3.690
Cites / Doc. (2 years)	2005	0.000
Cites / Doc. (2 years)	2006	0.462
Cites / Doc. (2 years)	2007	0.486
Cites / Doc. (2 years)	2008	0.618
Cites / Doc. (2 years)	2009	1.712
Cites / Doc. (2 years)	2010	3.607
Cites / Doc. (2 years)	2011	4.173
Cites / Doc. (2 years)	2012	2.144
Cites / Doc. (2 years)	2013	1.881
Cites / Doc. (2 years)	2014	2.349
Cites / Doc. (2 years)	2015	2.348
Cites / Doc. (2 years)	2016	2.309
Cites / Doc. (2 years)	2017	2.316
Cites / Doc. (2 years)	2018	2.098
Cites / Doc. (2 years)	2019	2.420
Cites / Doc. (2 years)	2020	2.747
Cites / Doc. (2 years)	2021	3.548
Cites / Doc. (2 years)	2022	3.834
Cites / Doc. (2 years)	2023	3.693

Total Cites

Self-Cites

Evolution of the total number of citations and journal's self-citations received by a journal's published documents during the three previous years.
Journal Self-citation is defined as the number of citation from a journal citing article to articles published by the same journal.

Cites	Year	Value
Self Cites	2005	0
Self Cites	2006	9
Self Cites	2007	13
Self Cites	2008	15
Self Cites	2009	76
Self Cites	2010	376
Self Cites	2011	374
Self Cites	2012	66
Self Cites	2013	73
Self Cites	2014	137
Self Cites	2015	269
Self Cites	2016	184
Self Cites	2017	125
Self Cites	2018	134
Self Cites	2019	212
Self Cites	2020	169
Self Cites	2021	143
Self Cites	2022	367
Self Cites	2023	289
Total Cites	2005	0
Total Cites	2006	18
Total Cites	2007	52
Total Cites	2008	110
Total Cites	2009	288
Total Cites	2010	743
Total Cites	2011	959
Total Cites	2012	547
Total Cites	2013	604
Total Cites	2014	748
Total Cites	2015	1079
Total Cites	2016	1727
Total Cites	2017	2058
Total Cites	2018	2166
Total Cites	2019	2040
Total Cites	2020	3398
Total Cites	2021	4922
Total Cites	2022	5949
Total Cites	2023	5915

External Cites per Doc

Cites per Doc

Evolution of the number of total citation per document and external citation per document (i.e. journal self-citations removed) received by a journal's published documents during the three previous years. External citations are calculated by subtracting the number of self-citations from the total number of citations received by the journal’s documents.

Cites	Year	Value
External Cites per document	2005	0
External Cites per document	2006	0.231
External Cites per document	2007	0.364
External Cites per document	2008	0.543
External Cites per document	2009	1.060
External Cites per document	2010	1.764
External Cites per document	2011	2.659
External Cites per document	2012	2.038
External Cites per document	2013	2.222
External Cites per document	2014	2.071
External Cites per document	2015	1.837
External Cites per document	2016	2.102
External Cites per document	2017	2.227
External Cites per document	2018	2.304
External Cites per document	2019	2.418
External Cites per document	2020	2.569
External Cites per document	2021	3.389
External Cites per document	2022	3.741
External Cites per document	2023	3.510
Cites per document	2005	0.000
Cites per document	2006	0.462
Cites per document	2007	0.486
Cites per document	2008	0.629
Cites per document	2009	1.440
Cites per document	2010	3.572
Cites per document	2011	4.359
Cites per document	2012	2.318
Cites per document	2013	2.527
Cites per document	2014	2.536
Cites per document	2015	2.447
Cites per document	2016	2.353
Cites per document	2017	2.371
Cites per document	2018	2.456
Cites per document	2019	2.698
Cites per document	2020	2.703
Cites per document	2021	3.491
Cites per document	2022	3.987
Cites per document	2023	3.690

% International Collaboration

International Collaboration accounts for the articles that have been produced by researchers from several countries. The chart shows the ratio of a journal's documents signed by researchers from more than one country; that is including more than one country address.

Year	International Collaboration
2005	20.51
2006	26.47
2007	33.82
2008	23.44
2009	13.16
2010	13.75
2011	16.25
2012	18.99
2013	19.85
2014	25.22
2015	19.89
2016	19.63
2017	19.17
2018	23.58
2019	16.34
2020	22.39
2021	27.74
2022	26.53
2023	24.68

Citable documents

Non-citable documents

Not every article in a journal is considered primary research and therefore "citable", this chart shows the ratio of a journal's articles including substantial research (research articles, conference papers and reviews) in three year windows vs. those documents other than research articles, reviews and conference papers.

Documents	Year	Value
Non-citable documents	2005	0
Non-citable documents	2006	0
Non-citable documents	2007	0
Non-citable documents	2008	0
Non-citable documents	2009	0
Non-citable documents	2010	0
Non-citable documents	2011	0
Non-citable documents	2012	0
Non-citable documents	2013	0
Non-citable documents	2014	0
Non-citable documents	2015	1
Non-citable documents	2016	1
Non-citable documents	2017	1
Non-citable documents	2018	0
Non-citable documents	2019	0
Non-citable documents	2020	2
Non-citable documents	2021	2
Non-citable documents	2022	3
Non-citable documents	2023	2
Citable documents	2005	0
Citable documents	2006	39
Citable documents	2007	107
Citable documents	2008	175
Citable documents	2009	200
Citable documents	2010	208
Citable documents	2011	220
Citable documents	2012	236
Citable documents	2013	239
Citable documents	2014	295
Citable documents	2015	440
Citable documents	2016	733
Citable documents	2017	867
Citable documents	2018	882
Citable documents	2019	756
Citable documents	2020	1255
Citable documents	2021	1408
Citable documents	2022	1489
Citable documents	2023	1601

Cited documents

Uncited documents

Ratio of a journal's items, grouped in three years windows, that have been cited at least once vs. those not cited during the following year.

Documents	Year	Value
Uncited documents	2005	0
Uncited documents	2006	27
Uncited documents	2007	70
Uncited documents	2008	109
Uncited documents	2009	83
Uncited documents	2010	42
Uncited documents	2011	25
Uncited documents	2012	62
Uncited documents	2013	63
Uncited documents	2014	71
Uncited documents	2015	100
Uncited documents	2016	168
Uncited documents	2017	217
Uncited documents	2018	208
Uncited documents	2019	183
Uncited documents	2020	290
Uncited documents	2021	260
Uncited documents	2022	249
Uncited documents	2023	301
Cited documents	2005	0
Cited documents	2006	12
Cited documents	2007	37
Cited documents	2008	66
Cited documents	2009	117
Cited documents	2010	166
Cited documents	2011	195
Cited documents	2012	174
Cited documents	2013	176
Cited documents	2014	224
Cited documents	2015	341
Cited documents	2016	566
Cited documents	2017	651
Cited documents	2018	674
Cited documents	2019	573
Cited documents	2020	967
Cited documents	2021	1150
Cited documents	2022	1243
Cited documents	2023	1302

% Female Authors

Evolution of the percentage of female authors.

Year	Female Percent
2005	15.94
2006	18.62
2007	21.37
2008	23.02
2009	23.60
2010	24.14
2011	22.37
2012	25.96
2013	27.44
2014	31.86
2015	31.63
2016	34.02
2017	31.39
2018	30.06
2019	33.76
2020	31.08
2021	32.96
2022	30.32
2023	31.39

Documents cited by public policy (Overton)

Evolution of the number of documents cited by public policy documents according to Overton database.

Documents	Year	Value
Overton	2005	0
Overton	2006	2
Overton	2007	1
Overton	2008	0
Overton	2009	0
Overton	2010	1
Overton	2011	0
Overton	2012	3
Overton	2013	11
Overton	2014	17
Overton	2015	22
Overton	2016	9
Overton	2017	12
Overton	2018	5
Overton	2019	18
Overton	2020	12
Overton	2021	4
Overton	2022	5
Overton	2023	7