scholarly journals Influência das variações hidrometeorológicas na qualidade da água do baixo rio Itajaí-Mirim, município de Itajaí (SC)

2020 ◽  
Vol 42 ◽  
pp. e2
Author(s):  
Evandro Oscar Mafra ◽  
Eduardo Werneck ◽  
Viviane Tranker ◽  
Aline Pereira Gomes
Keyword(s):  
Water Quality ◽  
Flow Rate ◽  
Environmental Parameters ◽  
General State ◽  
Chemical Parameters ◽  
Limit Values ◽  
Physical Chemical ◽  
State Of Water ◽  
Before And After

The Itajaí-Mirim River located in Santa Catarina, in the region of the low estuary of the Itajaí-Açu River, is the place where most of the water supplied for consumption is consumed by the Municipalities of Itajaí and Navegantes, the São Roque catchment station. This study aims to analyze the water quality in the Itajaí-Mirim river before and after the implantation of the dam in the Itajaí-Mirim river, based on a monitoring of physical-chemical parameters. The collections described in this report were carried out at six sample points, from January to December 2007, with the purpose of physically and chemically characterizing the environment in the rectified channel and, also, in the original bed of Itajaí-Mirim. The parameters measured in situ serve to assess the general state of water quality at the time of sampling. The main parameters measured, four of them deserve special attention (pH, Turbidity, Dissolved Oxygen and Salinity) and the correlated environmental parameters were flow rate and precipitation. In general, depending on the main results obtained, the analyzed waters can be classified in Class 2 of fresh waters, according to the limit values of CONAMA Resolution No. 357/05, and for the sampled period, precipitation and flow influenced the water quality.

scholarly journals Kajian Kualitas Air Berdasarkan Keanekaragaman Meiofauna dan Parameter Fisika-Kimia di Pesisir Losari, Makassar

2022 ◽  
Vol 20 (1) ◽  
pp. 45-57
Author(s):  
Muh Sri Yusal ◽  
Ahmad Hasyim
Keyword(s):  
Water Quality ◽  
Anthropogenic Activities ◽  
Environmental Parameters ◽  
Sampling Technique ◽  
Chemical Parameters ◽  
Purposive Sampling ◽  
Physical Chemical ◽  
Seawater Quality ◽  
Water Quality Status ◽  
Temperature Depth

Pesisir merupakan kawasan yang rentan mengalami penurunan kualitas perairan akibat masuknya bahan-bahan pencemar hasil aktivitas antropogenik dari daratan. Penelitian ini bertujuan untuk untuk mengkaji kualitas perairan berdasarkan keanekaragaman meiofauna dan parameter fisika-kimia di pesisir Losari, Makassar. Selain itu penelitian ini dilakukan untuk menganalisis pengaruh parameter fisika-kimia terhadap keanekaragaman meiofauna di dasar perairan. Penelitian ini bersifat kuantitatif dengan teknik pengambilan data secara purposive sampling. Status kualitas perairan di pesisir Losari dikategorikan sebagai perairan yang tercemar berat, hal ini didasarkan pada tingkat keanekaragaman spesies meiofauna yang sangat rendah dan sebagian besar parameter fisika-kimia perairan yang tidak memenuhi baku mutu yang telah ditentukan oleh pemerintah RI melalui Kep. MLH. No. 51 Tahun 2004. Kecerahan, DO, Suhu, kedalaman, salinitas, dan nitrat sedimen merupakan parameter fisika-kimia yang berkorelasi positif atau berpengaruh terhadap tingkat keanekaragaman meiofauna. Adapun parameter lingkungan perairan yang berkorelasi negatif terhadap tingkat keanekaragaman meiofauna di pesisir Losari, diartikan sebagai hubungan yang tidak menguntungkan. Kondisi ini terjadi akibat meiofauna merasa terganggu atas sebaran fosfat sedimen, nitrat air laut, fosfat air laut, dan pH yang tidak memenuhi baku mutu air laut.ABSTRACTThe Coastal zone are susceptible to decreasing water quality due entry of pollutants from anthropogenic activities in the mainland. This study assessed water quality based on meiofauna diversity and physical-chemical parameters in the Losari coast, Makassar. Furthermore, this study was to analyze the physical-chemical parameters effect on the diversity of meiofauna at the seabed. It employed a quantitative approach with purposive sampling technique. Water quality status on the Losari coast categorized as heavily polluted waters, this based on low level of meiofauna species diversity and most of the physical-chemical parameters does not meet the quality standards determined by Indonesian government through Kep. MLH. No. 51 of 2004. Brightness, DO, temperature, depth, salinity, and sediment nitrate are physical-chemical parameters positively correlated or influenced of meiofauna diversity level. The aquatic environmental parameters negatively correlated with meiofauna diversity level in the Losari coast are interpreted as an unfavorable relationship. This condition occurs because the meiofauna feel disturbed by distribution of sedimentary phosphate, seawater nitrate, seawater phosphate, and pH that does not meet seawater quality regulations.

scholarly journals Some indicators of water quality of the Tamis river

2011 ◽  
Vol 17 (1) ◽  
pp. 107-115 ◽  
Author(s):  
Nada Babovic ◽  
Dejan Markovic ◽  
Vojkan Dimitrijevic ◽  
Dragan Markovic
Keyword(s):  
Water Quality ◽  
Ph Value ◽  
Ammonium Nitrogen ◽  
Field Analysis ◽  
Total Hardness ◽  
Chemical Parameters ◽  
Physico Chemical

This paper shows the results obtained in field analysis performed at the Tamis River, starting from the settlement Jasa Tomic - border between Serbia and Romania to Pancevo - confluence of Tamis into the Danube. The Tamis is a 359 km long river rising in the southern Carpathian Mountains. It flows through the Banat region and flows into the Danube near Pancevo. During the years the water quality of the river has severely deteriorated and badly affected the environment and the river ecosystem. In situ measurements enabled determination of physico-chemical parameters of water quality of the Tamis River on every 400 m of the watercourse, such as: water temperature, pH value, electrical conductivity, contents of dissolved oxygen and oxygen saturation. The main reason of higher pollution of Tamis is seen in connection to DTD hydro system. Sampling was performed at 7 points with regard to color, turbidity, total hardness, alkalinity, concentration of ammonium nitrogen, nitrite nitrogen, nitrate nitrogen, iron, chlorides and sulphates in samples. The aim of the present work was to evaluate water quality in the Tamis River taking into account significant pollution, which originates from settlements, industry and agriculture, and to suggest appropriate preventive measures to further pollution decreasing of the river's water.

scholarly journals Kualitas Air Situ Lebak Wangi Bogor Berdasarkan Analisa Fisika, Kimia dan Biologi

2017 ◽  
Vol 3 (2) ◽  
pp. 104
Author(s):  
Dewi Elfidasari ◽  
Nita Noriko ◽  
Yunus Effendi ◽  
Riris Lindiawati Puspitasari
Keyword(s):  
Water Quality ◽  
Water Reservoir ◽  
Quality Standard ◽  
Quality Analysis ◽  
Disposal Site ◽  
Physical Chemical ◽  
Groundwater Supply ◽  
Lake Waters

<div class="WordSection1"><p><em>Abstrak</em> - <strong>Situ Lebak Wangi merupakan situ yang berada di daerah Bogor, dan awalnya dimanfaatkan sebagai tempat penampungan air saat musim hujan untuk peningkatkan persediaan  air tanah.  Saat ini, Situ Lebak Wangi dimanfaatkan sebagai tempat pembuangan limbah oleh masyarakat. Hal ini dapat menyebabkan perubahan kualitas baik fisik, kimia dan biologi  perairan situ. Untuk itu perlu dilakukan penelitian terhadap kualitas fisik, kimia dan biologi perairan Situ Lebak Wangi agar diperoleh informasi mengenai kualitas perairannya sehingga dapat disosialisasikan kepada masyarakat di sekitarnya nilai penting konservasi, pengelolaan dan pemanfaatan situ tersebut. Hasil pengukuran sifat fisik dan kimia air menunjukkan bahwa suhu di perairan Situ Lebak Wangi masih memenuhi baku mutu air kelas 1, nilai total padatan terlarut perairan Situ masih di bawah ambang batas baku mutu yang dipersyaratkan, nilai kecerahan di perairan Situ Lebak Wangi berkisar antara 67,17 – 80,83 cm dengan nilai rata-rata 74,46 cm, nilai pH perairan danau lebih rendah dari perairan sungai, yaitu berkisar antara 6,60–8-80. Pengukuran DO menunjukkan bahwa di perairan danau konsumsi oksigennya lebih tinggi, sedangkan hasil BOD5 menunjukkan bahwa perairan Situ Lebak Wangi sudah tercemar oleh bahan organik mudah urai (BOD5). Nilai daya hantar listrik berkisar antara 112,0 – 118,0 µhos/cm. Hasil analisa kualitas air Situ Lebak Wangi secara keseluruhan menunjukkan bahwa perairan tersebut tidak layak untuk dijadikan sebagai air baku, karena mengandung bakteri patogen Salmonella-Shigella yang merupakan penyebab thypus dan kolera. </strong></p><p>                                                          </p><p><strong><em>Keata Kunci </em></strong> - kualitas fisik, kimia dan biologi; Situ Lebak Wangi; Perairan; Baku mutu air</p></div><br clear="all" /><p> </p><p><em>Abstract</em> - <strong>Situ Lebak Wangi is a place located in the Bogor area, and was originally used as a water reservoir during the rainy season to increase groundwater supply. Currently, Situ Lebak Wangi is used as a waste disposal site by the community. This can lead to changes in the quality of both physical, chemical and biological waters there. Therefore, research on the physical, chemical and biological qualities of waters of Situ Lebak Wangi to obtain information about the quality of the waters so that it can be socialized to the community around the importance of conservation, management and utilization of the site. The result of measurement of physical and chemical properties of water shows that the temperature in Situ Lebak Wangi waters still meet the water quality standard class 1, the total dissolved solids of waters Situ is still below the required quality standard threshold, the brightness value in Situ Lebak Wangi waters ranges between 67, 17 - 80.83 cm with an average rating of 74.46 cm, the pH value of the lake waters lower than river waters, which ranged from 6.60-8-80. Measurements of DO indicate that in lake waters oxygen consumption is higher, whereas BOD5 results show that waters Situ Lebak Wangi already contaminated by organic material easily explained (BOD5). The electrical conductivity values range from 112.0 - 118.0 μhos / cm. The result of Situ Lebak Wangi water quality analysis as a whole shows that the water is not feasible to serve as raw water, because it contains Salmonella-Shigella pathogen bacteria which is the cause of thypus and cholera.</strong></p><p><strong> </strong></p><p><strong><em>Keywords</em></strong><strong> - </strong><em>physical quality, chemistry and biology, </em><em>Situ Lebak Wangi, </em><em>Waters, Water quality standards</em><strong><em></em></strong></p>

scholarly journals Effects of environmental factors on Tigriopus fulvus, Fischer 1860, a Mediterranean harpacticoid copepod

2018 ◽  
Vol 91 (1) ◽  
Author(s):  
Guido Bonello ◽  
Cristiano Angelini ◽  
Luigi Pane
Keyword(s):  
Climate Change ◽  
Life Cycle ◽  
Environmental Factors ◽  
Population Density ◽  
Harpacticoid Copepod ◽  
Environmental Parameters ◽  
Chemical Parameters ◽  
Climate Change Effects ◽  
Physical Chemical ◽  
Extinction Event

Tigriopus fulvus (Fischer, 1860) is a benthic harpacticoid copepod of the Mediterranean supralittoral zone. The transitional characteristics of this environment forced this species to develop high resistance to changes of environmental parameters. Nevertheless, Tigriopus fulvus life-cycle is influenced from the splashpools physical-chemical parameters. In this paper, we present the results of a supralittoral monitoring performed in 2014, confirming the influence of some of these environmental parameters on population buildups. Because of recent worldwide climate change effects, a threat might have been posed on this particularly exposed organism, whose population density decreased of a sixfold value in the last 30 years. During the three pools (A, B, C) monitoring, the maximum copepod density recorded was 1456 Ind/l (September 2014, Pool C), alongside first records of extinction event for Tigriopus fulvus.

scholarly journals AVALIAÇÃO DA QUALIDADE DE LARANJA PÊRA APÓS ARMAZENAMENTO COM ETILENO

2002 ◽  
Vol 20 (2) ◽  
Author(s):  
JORGE JOSÉ DO VALE OLIVEIRA ◽  
MARIA CECÍLIA DE FIGUEIREDO TOLEDO ◽  
JOSÉ MARIA MONTEIRO SIGRIST ◽  
KATUMI YOTSUYANAGI ◽  
IVÂNIA ATHIÉ
Keyword(s):  
Relative Humidity ◽  
Storage Period ◽  
Quality Parameters ◽  
Chemical Parameters ◽  
Physical Chemical ◽  
Before And After ◽  
Orange Fruit

Laranjas da variedade Pêra, previamente armazenadas durante três dias, com e sem etileno foram pulverizadas com Imazalil, Tiabendazol e a mistura de ambos, formulados ou não com cera. Em seguida, foram mantidas durante 25 dias a 4ºC ± 2ºC/90% ± 5% de umidade relativa, sendo avaliados parâmetros de qualidade da laranja, antes e ao final do armazenamento. Com exceção do atributo cor não ocorreram diferenças estatisticamente significativas nos demais parâmetros químicos e físico-químicos, independente da exposição ao etileno. O etileno foi eficiente no desverdecimento de laranjas, sem comprometer seus atributos de qualidade, e o tratamento posterior com cera contribuiu para manter inalterado o padrão de cor obtido. EVALUATION OF THE QUALITY OF PÊRA ORANGE FRUIT AFTER STORAGE IN ETHYLENE Abstract Oranges of the variety Pêra previously stored during three days with and without ethylene were sprayed with Imazalil, Thiabendazole and a mixture of both fungicides, formulated with and without wax. Following this treatment the fruits were stored during 25 days at 4ºC ± 2ºC / 90% ± 5% of relative humidity, parameters related to orange quality were evaluated before and after the storage period. With exception of the attribute color, no significative statistically differences were observed in the chemical and physical-chemical parameters, independent of the exposure to ethylene. The ethylene was effective for the degreening of orange with no action on the quality parameters. The further treatment with wax contributed to maintain the pattern of colour unchanged.

scholarly journals Spatial Pattern of Water Quality on Coral Reef Area Around Kaledupa Island

Jurnal Segara ◽  
2016 ◽  
Vol 12 (2) ◽  
Author(s):  
Hadiwijaya L. Salim ◽  
Dini Purbani ◽  
Agustin Rustam ◽  
Yulius ◽  
Devi D. Suryono ◽  
...  
Keyword(s):  
Water Quality ◽  
Living Environment ◽  
Physical Parameters ◽  
Light Pollution ◽  
Chemical Parameters ◽  
Standard Values ◽  
Coral Reef Area ◽  
Healthy Coral

Healthy coral reefs depends on the quality of the waters , so that research and monitoring of water quality becomes important. This research attempt to asses marine waters quality at kaledupa island and it’ s surrounding waters on October and November 2014. 33 In-situ samples were collected using multiparameters tool purposively which are categorized into  physical parameters (temperature, turbidity and clarity), and chemical parameters (DO, salinity and pH). Waters quality defined by STORET method based on Ministry of Living Environment decree number 115 year of 2003. Analysis geographically has been conducted to describe distribution of waters quality spatially. The result shows that Kaledupa waters has sustain slightly pollution, especially on DO, turbidity, temperature and salinity parameters which have deviated from standard values. The light pollution in Kaledupa waters is suspected caused by the entry of abundance organic matter and shallow bathymetry.

scholarly journals Physico-chemical assessment of waters used to irrigate agricultural lands of Amazon

2021 ◽  
pp. 1066-1073
Author(s):  
Suziane Magalhães do Nascimento ◽  
Joaquim Alves de Lima Júnior ◽  
Pedro Moreira de Sousa Júnior ◽  
Mateus Higo Daves Alves ◽  
Janile do Nascimento Costa ◽  
...  
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Quality Analysis ◽  
Chemical Parameters ◽  
Water Quality Analysis ◽  
Low Salinity ◽  
Physico Chemical ◽  
Geological Formation

The use of pesticides / fertilizers in plantations has become a problem in maintaining the quality of surface water. Thus, the objective of this study was to evaluate the water quality for irrigation purposes in the Rio Apéu microbasin – Para. The physico-chemical parameters evaluated were: pH, DO, SAR, TDS and EC measured in situ and the metals Al, Fe, Na, Ca, Mg determined in the laboratory Evandro Chagas Institute, according to the method of APHA. The average levels of pH (5.51), OD (5.04 mg L-1) are indications of normal condition in Amazonian waters. The results of Al (332 mg L-1) and Fe (5.74 mg L -1) imply the leaching of sediments from the geological formation of the region rich in these minerals, even though they present values above what is recommended by the legislation. The Richard classification allowed us to define that the waters of the study area have low salinity and sodicity, so they are not restricted to use. Thus, the results of the water quality analysis in the watershed can be concluded that it does not offer environmental problems in the use for irrigation activity

scholarly journals The Salty Lakes of Ocna Sibiului. Past. Present. Future

2013 ◽  
Vol 70 (2) ◽  
pp. 377-382
Author(s):  
Tania MIHAIESCU ◽  
Manuela CUC ◽  
Mihnea Andrei MIHAIESCU
Keyword(s):  
Water Quality ◽  
Major Ions ◽  
The Other ◽  
Future Generations ◽  
The Past ◽  
Physical Chemical ◽  
Evolution Characteristics ◽  
Chlorine Ions ◽  
Salt Deposits

At the center of the Transyvanian Plateau lies Ocna Sibiului, with its salt deposits which, in places,  run  up  to  one  thousand  meters  below  the  surface.  The  presence  of  these  deposits has  been favored, due the extraction of salt throughout the years causing the formation of the now famous salt lakes. Due to different environmental conditions, lacustrine cuvettes and water quality differ from one lake  to  another. The  studied  lakes  are  considered  to  be  in  conection  with  the  salt  deposits  exposed through  minig  activities  carried  on  in  different time periods.  Other  lakes  in  the  area  already are isolated from salt deposits due to natural sedimentation proceses. The study adresses the lakes which still  present  a  high  degree of  salinity  and  are  used for  balnear  purposes,  and  present,  due  to  various factors, variation of physical-chemical composition throughout the year. Water samples were collected from  the  main  six  lakes  in  Ocna  Sibiului  (Ocniţa -  Avram  Iancu;  Rândunica;  Negru;  Fără  Fund; Brâncoveanu  and  Gura  Minei). Surveys  were  carried  out  in four  periods  (March-November)  during 2012.Water  temperature,  electrical  conductivity  (at  25°C)  and  pH  were  measured in-situ. The water pH  changed from  a  lake  to  another.  Generally  it  is  within  the  range of  6.78  to  8.8  highlighting  the neutral  to  slightly  alkaline  lake  water.  Salt  lake  water  conductivity  values,  in  the  upper  layers  vary within  a  wide  range,  from  more  than  200  mS cm-1 to 45.7 mS cm-1, with  different  values from the different  lacustrine  units. The  salt  water  lakes are  characterized  by  high  content  of  sodium  and chlorine ions. The other major ions are present in a small amount. This paper aims to compare the past and present evolution, characteristics and environment of these lakes, , and, based on this and current research, to project a vision of their future and how it will affect the lives of future generations living besides them.

Wetland Ecosystem Monitoring Through Water Quality Perspectives

2022 ◽  
pp. 51-70
Author(s):  
Shahid Ahmad Dar ◽  
Sami Ullah Bhat ◽  
Sajad Ahmad Dar
Keyword(s):  
Water Quality ◽  
Field Testing ◽  
Water Quality Monitoring ◽  
Quality Monitoring ◽  
Physical Parameters ◽  
Chemical Parameters ◽  
Ecosystem Monitoring ◽  
Physico Chemical

Water quality monitoring is an important tool in determining the safety and suitability of water for various desired and intended uses. The procedures involved in the evaluation of water quality are numerous and multifaceted. Therefore, taking into consideration the specific objectives of water quality monitoring, sampling design is of vital importance. Most of the physical parameters of water quality are determined via in-situ measurements using modern testing equipment/field testing kits. Although there are some good field-based sensors that are being used for evaluation of water quality, the chemical parameters traditionally are mostly analyzed through laboratory-based experiments. This chapter is aimed to offer an inclusive knowledge and insights on the importance and assessment of physico-chemical parameters that are of high priority for monitoring the water quality of wetlands.

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