東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

CULTURE STUDIES ON ARSENIC (AS III, ...

SORSA, KIRSTI KAARINA.

Linked to FindBook

Google Book

Amazon

博客來

CULTURE STUDIES ON ARSENIC (AS III, AS V, MMAA) INTERACTION WITH THREE FRESHWATER ALGAE (MICROCYSTIS AERUGINOSA, ACTINASTRUM HANTZSCHII AND ASTERIONELLA FORMOSA) (MONOMETHYLARSONIC ACID).

Record Type:	Electronic resources : Monograph/item
Title/Author:	CULTURE STUDIES ON ARSENIC (AS III, AS V, MMAA) INTERACTION WITH THREE FRESHWATER ALGAE (MICROCYSTIS AERUGINOSA, ACTINASTRUM HANTZSCHII AND ASTERIONELLA FORMOSA) (MONOMETHYLARSONIC ACID)./
Author:	SORSA, KIRSTI KAARINA.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 1983,
Description:	388 p.
Notes:	Source: Dissertation Abstracts International, Volume: 44-05, Section: B, page: 1474.
Contained By:	Dissertation Abstracts International44-05B.
Subject:	Geochemistry. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=8316235

CULTURE STUDIES ON ARSENIC (AS III, AS V, MMAA) INTERACTION WITH THREE FRESHWATER ALGAE (MICROCYSTIS AERUGINOSA, ACTINASTRUM HANTZSCHII AND ASTERIONELLA FORMOSA) (MONOMETHYLARSONIC ACID).
SORSA, KIRSTI KAARINA.

CULTURE STUDIES ON ARSENIC (AS III, AS V, MMAA) INTERACTION WITH THREE FRESHWATER ALGAE (MICROCYSTIS AERUGINOSA, ACTINASTRUM HANTZSCHII AND ASTERIONELLA FORMOSA) (MONOMETHYLARSONIC ACID). - Ann Arbor : ProQuest Dissertations & Theses, 1983 - 388 p.

Source: Dissertation Abstracts International, Volume: 44-05, Section: B, page: 1474.

Thesis (Ph.D.)--The University of Wisconsin - Madison, 1983.

Algal As metabolism was studied by laboratory incubation experiments for elucidating environmental character of various As forms {arsenate (Na(,2)HAsO(,4)), arsenite (NaAsO(,2)), and monomethylarsonic acid (CH(,3)AsO(,3)H(,2) = MMAA)}. Unialgal batch cultures of Microcystis aeruginosa (Cyanophyta), Actinastrum hantzschii (Chlorophyta), and Asterionella formosa (Bacillariophyta) were employed for the work. This work provides insight into algal role in mediating the geochemical behavior of this widespread element and into mechanisms and factors controlling As partitioning with phytoplankton.Subjects--Topical Terms:

539092
Geochemistry.

CULTURE STUDIES ON ARSENIC (AS III, AS V, MMAA) INTERACTION WITH THREE FRESHWATER ALGAE (MICROCYSTIS AERUGINOSA, ACTINASTRUM HANTZSCHII AND ASTERIONELLA FORMOSA) (MONOMETHYLARSONIC ACID).
LDR:03576nmm a2200313 4500 001 2160047
005 20180724085440.5
008 190424s1983 ||||||||||||||||| ||eng d
035 $a (MiAaPQ)AAI8316235
035 $a AAI8316235
040 $a MiAaPQ $c MiAaPQ
100 1 $a SORSA, KIRSTI KAARINA. $3 3347952
245 1 0 $a CULTURE STUDIES ON ARSENIC (AS III, AS V, MMAA) INTERACTION WITH THREE FRESHWATER ALGAE (MICROCYSTIS AERUGINOSA, ACTINASTRUM HANTZSCHII AND ASTERIONELLA FORMOSA) (MONOMETHYLARSONIC ACID).
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 1983
300 $a 388 p.
500 $a Source: Dissertation Abstracts International, Volume: 44-05, Section: B, page: 1474.
502 $a Thesis (Ph.D.)--The University of Wisconsin - Madison, 1983.
520 $a Algal As metabolism was studied by laboratory incubation experiments for elucidating environmental character of various As forms {arsenate (Na(,2)HAsO(,4)), arsenite (NaAsO(,2)), and monomethylarsonic acid (CH(,3)AsO(,3)H(,2) = MMAA)}. Unialgal batch cultures of Microcystis aeruginosa (Cyanophyta), Actinastrum hantzschii (Chlorophyta), and Asterionella formosa (Bacillariophyta) were employed for the work. This work provides insight into algal role in mediating the geochemical behavior of this widespread element and into mechanisms and factors controlling As partitioning with phytoplankton.
520 $a The bioavailability and differential uptake patterns of chemical As forms were established. As uptake varied with its form and concentration as well as algal species.
520 $a External nutrient (P) concentration was found to control the extent of As accumulation. Phosphorus enrichment inhibited As uptake in a concentration dependent fashion. Moreover, As appeared to alter algal P utilization. Although the antagonism was most conspicuous in the case of arsenate, was not restricted to this species, relation was observed also between arsenite, monomethylarsonic acid and phosphorus. These findings lead to some implications about the ecological role of the antagonism with regard to nutrient dynamics. Inorganic and organic As exhibited different uptake modes, suggesting several binding mechanisms. Inorganic arsenical uptake appeared to be a multistep process. Time course studies of As excretion from algal cells revealed that biphasic retention and removal processes would be at least partly governing uptake. Organic As uptake followed a less complex mode.
520 $a Differential sensitivity of As species uptake to light-dark conditions and metabolic inhibitors indicated different transport mechanisms for the three arsenicals.
520 $a The impact of sublethal As levels on algal biochemical and physiological functions: growth, photosynthesis, ATP and pigment contents, were monitored.
520 $a Biological effects of arsenicals seemed to depend on As level, chemical form and P concentration. A great deal of variability was observed among different algae in their sensitivity and responses to As exposure. The diatom, A. formosa displayed the most sensitive and the blue-green and green algae, M. aeruginosa and, A. hantzschii the most tolerant responses. High P levels mitigated algal reactions. As induced changes in algal metabolism ranged from inhibition of growth, photosynthesis and ATP formation to their enhancement. Arsenicals stimulated algal chlorophyll accumulation.
590 $a School code: 0262.
650 4 $a Geochemistry. $3 539092
690 $a 0996
710 2 $a The University of Wisconsin - Madison. $3 626640
773 0 $t Dissertation Abstracts International $g 44-05B.
790 $a 0262
791 $a Ph.D.
792 $a 1983
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=8316235