MARC details
| 000 -LEADER |
|---|
| fixed length control field |
03018nam a22003017a 4500 |
| 003 - CONTROL NUMBER IDENTIFIER |
|---|
| control field |
OSt |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
|---|
| control field |
20241123160603.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
|---|
| fixed length control field |
241123b |||||||| |||| 00| 0 eng d |
| 040 ## - CATALOGING SOURCE |
|---|
| Original cataloging agency |
TUPM |
| Language of cataloging |
English |
| Transcribing agency |
TUPM |
| Modifying agency |
TUPM |
| Description conventions |
rda |
| 050 ## - LIBRARY OF CONGRESS CALL NUMBER |
|---|
| Classification number |
BTH GF 41 |
| Item number |
P76 2024 |
| 100 ## - MAIN ENTRY--PERSONAL NAME |
|---|
| Personal name |
Provido, Jordan |
| Relator term |
author |
| 245 ## - TITLE STATEMENT |
|---|
| Title |
Assessment of microplastics in Sto. Niño and Sta. Elena section of Marikina river, Marikina city, Philippines/ |
| Statement of responsibility, etc. |
Jordan Provido, Kate Angeline E. Labitag, John Wendell B. Ambrosio, Bryan Ivan M. Reyes .-- |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. |
|---|
| Place of publication, distribution, etc. |
Manila: |
| Name of publisher, distributor, etc. |
Technological University of the Philippines, |
| Date of publication, distribution, etc. |
2024. |
| 300 ## - PHYSICAL DESCRIPTION |
|---|
| Extent |
ix, 99pages: |
| Dimensions |
29cm. |
| Accompanying material |
+1 CD-ROM (4 3/4in.) |
| 336 ## - CONTENT TYPE |
|---|
| Source |
rdacontent |
| 337 ## - MEDIA TYPE |
|---|
| Source |
rdamedia |
| 338 ## - CARRIER TYPE |
|---|
| Source |
rdacarrier |
| 500 ## - GENERAL NOTE |
|---|
| General note |
Thesis (undergraduate) |
| 502 ## - DISSERTATION NOTE |
|---|
| Dissertation note |
College of Science .-- |
| Degree type |
Bachelor of Science in Environmental Science : |
| Name of granting institution |
Technological University of the Philippines, |
| Year degree granted |
2024. |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE |
|---|
| Bibliography, etc. note |
Includes bibliography: |
| 520 ## - SUMMARY, ETC. |
|---|
| Summary, etc. |
Microplastics (<5mm) are plastic debris originating from primary and secondary sources.<br/>The Philippines is considered a top contributor of plastics globally, however, there is still<br/>limited research about microplastics in the country, particularly in freshwater such as<br/>rivers. Rivers serve as one of the major pathways of land-based sources of microplastics<br/>that end up in the ocean. In this study, microplastic abundance and characteristics were<br/>assessed in the Sto. Nino and Sta. Elena section of the Marikina River, Philippines during<br/>wet and dry season. Surface water samples were collected using a bucket and Van Veen<br/>grab for sediments. Microplastics from the samples were extracted through 10% KOH<br/>digestion and floatation using 30% NaCl. Morphological characteristics were determined<br/>using a compound microscope while polymer types were identified via the FTIR-ATR<br/>method. The mean abundance of microplastic was 66.77 ± 55.95 particles/m3 and 17.33 ±<br/>14.81 particles/kg in surface water and sediments, respectively. A significant difference<br/>was not found between abundance and seasons in surface water (p>0.05); however, a<br/>significant difference was shown between abundance and seasons in sediments (p<0.05).<br/>The majority of the microplastics were categorized under 1<5.00 mm in surface water and<br/>500–<1000μm in sediments. Blue and white were the most abundant colors in surface<br/>water while red and white were in sediments. Fiber/line and fragments were the most<br/>dominant shapes. The study identified nine polymer types in which polyethylene (PE) and<br/>polypropylene (PP) were the most dominant across all seasons. There was a very low<br/>negative correlation between microplastic abundance and pH, while there was a very low<br/>positive correlation between conductivity and salinity. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Microplastics |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Body of water |
| Form subdivision |
rivers |
| 700 ## - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Labitag, Kate Angeline E. |
| Relator term |
author |
| 700 ## - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Ambrosio, John Wendell B. |
| Relator term |
author |
| 700 ## - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Reyes, Bryan Ivan M. |
| Relator term |
author |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
|---|
| Source of classification or shelving scheme |
Library of Congress Classification |
| Koha item type |
Bachelor's Thesis COS |
| Suppress in OPAC |
No |