Ali  Saberi, Mohammadreza  Taherizadeh, Fatemeh  Lavajoo, 
    Effect of Different Concentration of Mg, Sn, Zn, Cd and Fe on the Growth of <i>Chlorella
vulgaris</i>,
    Research Journal of Agronomy,
    Volume 13,Issue 3,
    2019,
    Pages 21-28,
    ISSN 1815-9354,
    rjagr.2019.21.28,
    (https://makhillpublications.co/view-article.php?doi=rjagr.2019.21.28)
    Abstract: The impact of different concentrations (5, 50,
250, 500 ppm) of the Magnesium (Mg), tin (Sn),
Cadmium (Cd), Iron (Fe) and Zinc (Zn) on the growth of
<i>Chlorella vulgaris</i> was studied during 15d exposure
experiments. The results showed that the effects of these
five metals on the growth of <i>Chlorella vulgaris</i> were
dependent on both concentration and exposure time. It
was found that 50 ppm treatments of Sn, Cd and Fe
significantly inhibited the growth of <i>Chlorella vulgaris</i>
and the effect became weaker and reached to lethal stages
with an increase in concentration. It has a good ability in
treatments with up to 50 ppm of Mg and Zn. Among the
five elements tested, the treatment with Mg showed
maximum chlorophyll &lsquo;a&rsquo; (9. 91&plusmn;1.2 &#956;g L<sup>&#150;1</sup>) content than
other of the elements. Therefore the lowest chlorophyll &lsquo;a&rsquo;
of 0.5&plusmn;0.12 and 0.24&plusmn; 0.12 &#956;g L<sup>&#150;1</sup> were noticed in
treatments with Sn and Fe at 250 ppm, respectively.
From the all above results it could be understood
that <i>C. vulgaris</i> can resist in low concentration of Sn, Cd
and Fe and high concentration of Mg and Zn in aquatic
ecosystems. Thus, it can infer that use to bioremediation
of pollution water.
    Keywords: growth;Chlorella vulgaris;Heavy metal;chlorophyll a;concentration